# facts

category: user_pref
tags: personal, career, personality, fire, introvert
created_at: 2026-04-29 08:30:46
updated_at: 2026-04-29 08:30:46
content:
Nan Zhang is a 39-year-old software engineering manager (ByteDance L4, joined June 2025) living in San Jose, California. Originally from Bazhong, Sichuan, China. Self-identified as introvert (i人) who values logic and first-principles thinking. Pursues FIRE strategy with goal to live in China/Southeast Asia long-term while keeping investments in US. Prefers concise, high-information-density communication. Values ROI maximization in decisions.


category: user_pref
tags: family, spouse, pregnancy, immigration, i-130
created_at: 2026-04-29 08:31:43
updated_at: 2026-04-29 08:31:43
content:
Married to Ting Zhang (born May 13, 1995), currently living in Chengdu, Sichuan. Wife pregnant with due date October 27, 2026 (as of April 2026, fetus at 8-9 weeks). Cross-border family situation - wife does not have US visa/green card and cannot travel to US immediately. Submitted I-130 spousal immigration petition for wife. Communication emphasizes understanding through logical transparency rather than emotional persuasion.


category: project
tags: roblox, interview, job, career, salary, adam-lief
created_at: 2026-04-29 08:32:10
updated_at: 2026-04-29 08:32:10
content:
Currently interviewing for Engineering Manager position at Roblox (San Mateo HQ). Salary target: $650k-950k TC (EM M1: $550k-700k, Sr EM M2: $700k-950k). Completed all interview rounds, preparing for final Director's Values Interview with Adam Lief (Senior Director, Programmability). Roblox emphasizes 4 values: Take the Long View, Respect the Community, We are Responsible, Get Stuff Done. Key preparation needed: STAR stories demonstrating long-term architectural thinking over short-term gains (avoiding "ByteDance style" rapid iteration messaging).


category: project
tags: housing, rent, commute, san-mateo, foster-city, almaden
created_at: 2026-04-29 08:32:43
updated_at: 2026-04-29 08:32:43
content:
Housing: Currently at Almaden Lake Village Unit #3306 (UDR managed), San Jose. Lease ends May 18, 2026. Committed deposit for One Pearl Place (Unit #328, 5210 Terner Way, San Jose, CA 95136) with move-in scheduled April 18, 2026. Monthly rent $2,596 includes assigned parking (no extra parking fee for first vehicle). Considering canceling One Pearl Place lease due to potential Roblox job in San Mateo - 1.5 hour daily commute (6x3 days/week) not sustainable. Exploring Peninsula apartments (Foster City, San Mateo, Redwood City) to reduce commute to 5-15 minutes. Wife not currently in US, single occupancy status.


category: user_pref
tags: tesla, model-y, model-3, fsd, car, ev
created_at: 2026-04-29 08:33:17
updated_at: 2026-04-29 08:33:17
content:
Automotive: Currently owns Tesla Model 3. Planning to upgrade to Model Y by end of March 2026 to transfer FSD (Full Self-Driving) feature. FSD transfer must be completed before March 31, 2026 deadline. Model Y color and price research shows significant discounts available. Charging infrastructure questions resolved - Model Y has no charging issues at One Pearl Place. Prefers electric vehicles for cost efficiency and technology.


category: user_pref
tags: finance, tax, investing, vanguard, robinhood, credit-cards, fire
created_at: 2026-04-29 08:33:41
updated_at: 2026-04-29 08:33:41
content:
Financial strategy: Uses index funds and mainstream brokers (Vanguard, Robinhood). Holds credit cards: Bilt Palladium, Venture X for rewards optimization. 2025 tax filing in progress - filed as Single but considering MFJ (Married Filing Jointly) for tax benefits. Uses TurboTax for filing. Foreign tax credits on investment income (Form 1116) needed. Robinhood 1099 received in March 2026. Vanguard account set up with direct deposit to credit card. Financial goal: FIRE (Financial Independence, Retire Early).


category: user_pref
tags: health, icl, vision, pregnancy, prenatal, wife
created_at: 2026-04-29 08:33:57
updated_at: 2026-04-29 08:33:57
content:
Health: Completed ICL (Implantable Collamer Lens) vision surgery for myopia. Wife experiencing early pregnancy symptoms (nausea/vomiting, HCG hormone peak around 8-10 weeks). Doctor visits at Chengdu Women and Children Hospital. Pregnancy safety concerns about food safety in China, using boiled water for final rinse of fruits. Wife craves spicy food (pickled beef noodles) to manage nausea. Foot swelling (edema) not yet present at 8-9 weeks - expected in third trimester.


category: tool
tags: technology, camera, ricoh, apple, ai, gemini, chatgpt, grok
created_at: 2026-04-29 08:34:17
updated_at: 2026-04-29 08:34:17
content:
Technology preferences: Photography enthusiast with Ricoh GR IIIx daily camera. Uses iPhone 13 Pro for CCD style photography. Uses MacBook Pro, prefers Apple ecosystem. Keyboards: Apple Magic Keyboard A1843 (with numeric keypad). Uses multiple AI tools: Gemini, ChatGPT, Grok. Prefers concise AI responses focused on core logic changes for code review. Uses Google Fi for international calling with auto-reply feature in China. Chrome DevTools proficient - uses Recorder, Performance, Network panels for debugging.


category: user_pref
tags: personality, mbti, istj, communication, first-principles
created_at: 2026-04-29 08:34:42
updated_at: 2026-04-29 08:34:42
content:
Personality: MBTI type identified as ISTJ (Introverted, Sensing, Thinking, Judging) - logical, systematic, values structure and planning. Originally tested as ISTP/INTP in earlier years, shifted to ISTJ due to career/life responsibilities requiring higher certainty and control. Prefers first-principles thinking, dislikes excessive metaphor or emotional persuasion. Decision style: data-driven with emphasis on long-term ROI. Communication: prefers concise, high-density information delivery without fluff. Uses "第一性思维" (first principles thinking) as core cognitive model.


category: general
tags: location, china, sichuan, bazhong, chengdu, san-jose, travel
created_at: 2026-04-29 08:35:19
updated_at: 2026-04-29 08:35:19
content:
Geography: Lived in Sichuan province (Bazhong, Chengdu, Mianyang) before moving to US. Now in San Jose, California. Parents previously in Bazhong but moved to Tianfu New Area collective hukou in 2018. Family home: Mianyang (绵阳览山晓大横厅). Wife's address: Chengdu Tianfu New Area Huayang, No. 846 South Section Tianfu Avenue, Annex 11. Work locations: San Jose (ByteDance), potentially San Mateo (Roblox). Travel history: Japan (April 2024), UK (April-May 2025), multiple trips back to China.


category: project
tags: immigration, green-card, i-130, uscis, spouse, petition
created_at: 2026-04-29 08:37:39
updated_at: 2026-04-29 08:37:39
content:
Immigration status: US Green Card holder since September 2023 (Resident Since date). Applied for I-130 spouse petition for wife Ting Zhang. Green card classification: E26 (EB-2 Advanced Degree professional). Documents prepared: Marriage certificate notarized, wife's birth certificate notarized, identity documents. I-130A form prepared (spouse beneficiary form). Physical evidence collected: travel records (Japan 2024, UK 2025), wedding photos, family photos, financial records. Wife due October 2026 - pregnancy is strong evidence of bona fide marriage. USCIS fee $675 for I-130. Timeline uncertain due to processing delays.


category: user_pref
tags: shopping, luxury, gold, jewelry, brands, preferences
created_at: 2026-04-29 08:37:49
updated_at: 2026-04-29 08:37:49
content:
Shopping preferences: Research-driven purchases with ROI analysis. Recent purchases: Zhou Da Fu gold necklace, engagement ring (ring size conversion from Hong Kong size), wedding "three golds" (三金). Uses rational analysis for big purchases - compared Tesla FSD transfer value vs depreciation. Skincare: considers specific services but uses logic to evaluate. Brand preferences: Blue Bottle coffee (Ground Coffee availability checks), Urban Revivo, Le Labo perfume. Reads reviews and forums (1Point3Acres, Reddit, Blind) before major decisions. Values authenticity over luxury marketing.


category: project
tags: career, background, education, self-made, china-to-us, bytedance
created_at: 2026-04-29 08:38:20
updated_at: 2026-04-29 08:38:20
content:
Career path: From ordinary student (top 10% academically) in Bazhong/Sichuan to Silicon Valley tech manager at ByteDance L4. Self-advocated US immigration pathway without agency assistance. Worked in Chengdu for several years before applying to US programs. Self-made professional - "only one from elementary to university class to come to US". Not the highest achiever or fastest promoter in previous jobs but focused on long-term growth and opportunity. Values "niche picking" - actively seeking environments that match innate potential. Managing team members from Tsinghua/Peking University backgrounds.


category: project
tags: active, decisions, challenges, roblox, housing, tesla, tax, pregnancy
created_at: 2026-04-29 08:38:54
updated_at: 2026-04-29 08:38:54
content:
Current challenges and active decisions: (1) Roblox interview preparation for Adam Lief Director's round - need to prepare STAR stories showing long-term thinking over short-term gains, avoid ByteDance "rapid iteration" messaging, emphasize platform thinking not just features. (2) Housing decision between South San Jose (One Pearl Place, already paid deposit, cheaper but 1.5h commute to San Mateo) vs Peninsula (Foster City/San Mateo, $200-600 more expensive but 5-15min commute). (3) Tesla Model Y purchase timing for FSD transfer before March 31 deadline. (4) Wife's pregnancy management across continents - food safety concerns in China, prenatal checkups in Chengdu. (5) 2025 tax filing decisions regarding filing status (Single vs MFJ) and foreign tax credits.


category: user_pref
tags: lifestyle, living, food, sleep, fitness, routine
created_at: 2026-04-29 08:39:02
updated_at: 2026-04-29 08:39:02
content:
Lifestyle preferences: Single occupancy living in US (wife in China), minimal need for social spaces. Prefers quiet, private environments (i人 trait). Values sleep quality and time efficiency. Cooking: Owns smart toilet (法标智能马桶), interested in kitchen gadgets. Dining: Craves spicy food, wife likes pickled beef noodles during pregnancy nausea. Sleep: Prefers sleeping on back, concerned about pillow selection. Fitness: Runs but cautious about cardiovascular health (mentioned Zhang Xuefeng's cardiac death case at 41 during running). Morning routine: Includes reading and planning.


category: tool
tags: skills, debugging, coding, chrome, photography, ricoh, smart-home
created_at: 2026-04-29 08:39:20
updated_at: 2026-04-29 08:39:20
content:
Technical skills and tools: Software engineer and manager with strong debugging skills. Uses Chrome DevTools (Recorder for user flow automation, Performance for timing, Network for HAR file export). Coding practices: Prefers minimal, focused code changes for easier MR review - "surgical edits". Familiar with Docker, modern frontend/backend stacks. Photography: Uses Ricoh GR IIIx for street photography and iPhone 13 Pro for CCD-style shots. Uses image recognition AI for identifying products. Familiar with Google Fi, international calling, auto-reply setup. Smart home: Uses smart devices (smart toilet).


category: user_pref
tags: values, thinking, philosophy, self-reliance, efficiency, roi
created_at: 2026-04-29 08:39:40
updated_at: 2026-04-29 08:39:40
content:
Core values and thinking models: (1) First-principles thinking (第一性思维) - strips away surface to reach core logic. (2) Time efficiency - extremely sensitive to time waste (commuting considered "invisible tax"). (3) ROI optimization - applies ROI thinking to money, time, and education resource allocation. (4) Self-reliance - navigated immigration and career without中介 (agency), prefers understanding systems rather than relying on intermediaries. (5) Long-term perspective - balances short-term actions against 2-5 year outcomes. (6) Anti-drama - dislikes emotional manipulation, excessive packaging, or "manager jargon" (资源对齐, 拉通, 对齐). Prefers direct, transparent communication.


category: project
tags: timeline, 2026, important-dates, milestones
created_at: 2026-04-29 08:40:02
updated_at: 2026-04-29 08:40:02
content:
Timeline (as of April 29, 2026): January 2026 - Began Roblox interview process. February 14, 2026 - Married Ting Zhang in Mianyang, Sichuan. February 25, 2026 - Submitted lease notice to vacate Almaden Lake Village (May 18, 2026). Early March 2026 - Paid holding deposit for One Pearl Place (move-in April 18, 2026). March 2026 - Wife's pregnancy confirmed, due date October 27, 2026 ( fetus at 8-9 weeks as of April). March 22, 2026 - Wife's prenatal checkup at Chengdu Women and Children Hospital, HCG testing. March 31, 2026 - Tesla FSD transfer deadline for Model Y purchase. April 18, 2026 - Scheduled move-in to One Pearl Place. May 18, 2026 - Almaden Lake Village lease ends. April/May 2026 - Roblox final interview with Adam Lief (pending scheduling). October 27, 2026 - Expected birth date of first child.


category: tool
tags: forums, research, information, sources, reddit, blind, one-point-three-acres
created_at: 2026-04-29 08:40:23
updated_at: 2026-04-29 08:40:23
content:
Information sources and habits: Active user of Chinese community forums - 1Point3Acres (一亩三分地) for career advice, salary data, immigration discussions. Uses Reddit (r/cscareerquestions) and Blind for company-specific insights (Roblox interview culture, ByteDance experiences). Values current/recent information - specifically asks for "last 3 weeks" discussions, latest visa policy, latest tax rules. Uses AI (Gemini, ChatGPT) for code assistance, writing, and decision analysis. Prefers responses that cite sources and provide data-backed recommendations. Takes screenshots and asks for concise summaries optimized for mobile viewing.


category: user_pref
tags: relationship, spouse, marriage, communication, cross-border
created_at: 2026-04-29 08:40:44
updated_at: 2026-04-29 08:40:44
content:
Relationship dynamics: Married to Ting Zhang with cross-border separation (husband in US, wife in China). High mutual understanding and support - wife expresses "老公也辛苦" (husband also works hard) and concerns about his travel fatigue. Husband's approach: uses logical explanation to address wife's pregnancy anxieties (food safety, medical decisions), validates her needs (supports spicy food cravings during nausea), proactively addresses concerns (purchases smart toilet, considers bed safety). Communication emphasizes understanding through transparency rather than emotional persuasion. Long-distance challenges: cannot provide physical support during pregnancy, relies on family (wife's mother in Chengdu) and quality healthcare (Chengdu Women and Children Hospital).


category: user_pref
tags: products, apple, smart-home, luggage, tablet, watch, camera-accessories
created_at: 2026-04-29 08:40:54
updated_at: 2026-04-29 08:40:54
content:
Product and service evaluations: Apple keyboards - uses A1843 Magic Keyboard with numeric keypad, prefers first-party Apple ecosystem. Smart toilets - uses and recommends 法标智能马桶 for functionality (automatic flush, heated seat). Luggage - researches brands and compares for quality vs price. Smartphones - considers domestic Chinese tablets for thin/lightweight/long-battery needs. Watches - compared Accutron Spaceview 2020 for strap replacement. Camera accessories - uses U-lock for bicycle, Fox Racing helmets (researched sizing). Considers "value over luxury" - analyzes utility vs cost for major purchases. Reads product specifications thoroughly before buying.


category: general
tags: news, tech, meta, tesla, celebrity, zhang-xuefeng, economics
created_at: 2026-04-29 08:41:10
updated_at: 2026-04-29 08:41:10
content:
Current events awareness: Follows tech news and updates - aware of Muse Spark (Meta AI model) released April 8, 2026, knows about Roblox's Luau language and Programmability focus, aware of Tesla market dynamics. Tracks celebrity news - inquired about Zhang Xuefeng's death (March 24, 2026, cardiac arrest after running at 41). Understands medical risks: discussed cardiac arrest causes, cardiovascular health implications of intense exercise. Uses fact-checking approach - seeks verification before believing news, discusses conspiracy theories (e.g., Zhang Xuefeng's death - analyzed logically vs阴谋论). Keeps up with economic trends - discussed Euro/USD depreciation, 0.99% APR credit card offers, Bilt Palladium benefits.


category: general
created_at: 2026-04-29 13:13:44
updated_at: 2026-04-29 13:13:44
content:
用户 GitHub: openjerry1995，拥有开源项目 ai_chat_history_exporter（Chrome 扩展），路径: /root/ai_chat_history_exporter，版本 v2.1.1，功能：导出 ChatGPT/Claude/Grok/Gemini 对话为 Markdown，100% 本地运行隐私保护，SSH 已配置可正常 Git 操作


category: general
created_at: 2026-04-30 04:32:38
updated_at: 2026-04-30 04:32:38
content:
用户服务器已安装自托管 SearxNG 搜索服务，位置：/root/searxng，虚拟环境：/root/searxng-venv，运行端口：8080，Hermes 配置文件已添加 web_search 后端指向 http://127.0.0.1:8080/search


category: general
created_at: 2026-04-30 05:21:57
updated_at: 2026-04-30 05:21:57
content:
用户 VPS 环境：Ubuntu 22.04 (racknerd-770948b)，已配置 WireGuard VPN 服务端监听端口 443（防 DPI/GFW 阻断），支持 3 设备并发（10.0.0.2/3/4），MTU 设为 1420，配置文件路径 /etc/wireguard/wg0.conf，已添加完整 NAT 规则（FORWARD + POSTROUTING MASQUERADE）。


# entities

entity_type: unknown
created_at: 2026-04-29 08:38:54
name:
s round - need to prepare STAR stories showing long-term thinking over short-term gains, avoid ByteDance "rapid iteration" messaging, emphasize platform thinking not just features. (2) Housing decision between South San Jose (One Pearl Place, already paid deposit, cheaper but 1.5h commute to San Mateo) vs Peninsula (Foster City/San Mateo, $200-600 more expensive but 5-15min commute). (3) Tesla Model Y purchase timing for FSD transfer before March 31 deadline. (4) Wife


entity_type: unknown
created_at: 2026-04-29 08:40:02
name:
s pregnancy confirmed, due date October 27, 2026 ( fetus at 8-9 weeks as of April). March 22, 2026 - Wife


