MingLi BaZi & Timing Lens True Solar Time · v0.1.36
Data Governance & Epistemic Boundaries

Privacy Policy & Data Retention Standard

MingLi is engineered on the principle that personal timing reflection requires absolute data dignity. We operate with strict data minimization, automatic 30-day data purging, and zero sale of personal information.

Effective Date: November 5, 2026 · Policy Version: 2026-11-05.v1

Data Minimization

Only essential birth inputs and decision dilemma questions are collected. No names, IDs, or precise street locations.

30-Day Auto-Purge

All chart calculations and reading reports carry a 30-day TTL and are permanently purged from database storage.

No Sale of Data

We never sell, rent, or trade your personal data with third-party advertisers or data brokers.

Non-Advice Boundary

BaZi is a reflective symbolic lens for personal decisions—not scientific prediction or medical/legal/financial advice.

Right to Erasure

You can request immediate deletion of your reading session and records at any time before the 30-day window.

1. Data Minimization & Information We Collect

We practice strict data minimization. We only collect the minimal parameters required to calculate your Four Pillars chart in true solar time and synthesize your plain-English Decision Memo:

  • Birth Details: Date of birth, recorded local time, and sex designation (used deterministically to calculate the forward or reverse direction of the 10-year Da Yun luck cycles).
  • Birthplace Coordinates: City name resolved to coordinates via GeoNames (CC BY 4.0). We do not record street addresses or real-time GPS coordinates.
  • Crossroads Dilemma: Category selection, question text, and optional context describing your cross-cultural or personal decision.
  • Optional Feedback & Follow-up: 1–5 star rating, willingness-to-pay tier, optional qualitative comments, and an optional email address if you request an automated 30-day experiment check-in.

We never ask for or store government IDs, full legal names, financial card details, or sensitive personal demographic data.

2. 30-Day TTL Data Retention & Automatic Purging

Personal reflections should not linger in persistent databases indefinitely. MingLi enforces a strict 30-day Time-To-Live (TTL) data retention rule across our Cloudflare D1 storage:

  • Every birth reading record (readings table) and Decision Memo (reports table) stores an immutable creation timestamp.
  • A daily scheduled Worker cron trigger (0 14 * * *) executes an automated purge routine, permanently deleting all reading records older than 30 days (created_at <= now - 30 days).
  • No cold storage backups, archive tables, or persistent shadow copies of your natal charts are retained after purge execution.

3. Absolute Prohibition on the Sale of Personal Data

MingLi has never sold personal data and will never sell personal data:

  • No Data Brokers or Advertisers: We do not sell, rent, broker, or monetize your birth details, dilemma questions, or reading outputs to any third parties.
  • No Third-Party Ad Trackers: Our web application contains zero advertising pixels, zero behavioral retargeting scripts, and zero cross-site trackers.
  • API Privacy Boundary: AI synthesis requests sent to Google AI Studio are processed under enterprise API privacy terms and are not logged or utilized to train general consumer AI models.

4. Epistemic Boundary & Non-Deterministic Advice Disclaimer

MingLi is committed to transparent intellectual boundaries:

  • Deterministic Chart Facts: Solar terms, true solar time corrections, Four Pillars sexagenary stems/branches, and Da Yun cycle start years are deterministic astronomical calculations.
  • Symbolic Interpretive Lens: Ten-God patterns, elemental balances, and timing considerations are historical Chinese symbolic frameworks intended solely for personal reflection, structured thinking, and exploratory hypothesis generation.
  • Non-Advice Notice: MingLi readings do not constitute medical, psychiatric, legal, investment, or financial advice. We do not provide fatalistic fortune-telling. You remain the sole author and decision-maker of your life trajectory.

5. User Data Rights & Erasure Requests

Under global data protection standards (including GDPR and CCPA/CPRA where applicable), you maintain comprehensive rights over your personal information:

  • Right of Access & Portability: You can export, print, or copy your 1-page Decision Memo and free blueprint at any time during your session.
  • Right to Immediate Deletion: Although records automatically expire after 30 days, you may request immediate manual deletion at any time by emailing privacy@getmingli.com with your readingId (displayed on your Decision Memo).
  • Right to Opt-Out of Follow-ups: If you registered for a 30-day experiment reminder, only a single one-time email is dispatched (zero recurring marketing lists), and you may cancel a pending reminder before Day 30 by emailing privacy@getmingli.com with your readingId or registered email address.
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