Privacy Policy

Product: Daojitong · Life Multidimensional Calculator (web and app, the "Service")

Related clients: the WeChat and Douyin mini-programs branded "Baifuliang" share the same account system and are covered by this policy.

Operator: Xiamen Binglei Network Technology Co., Ltd. ("we", "us")

Last updated: 16 September 2026 · Effective: 16 September 2026

We know how much your personal information matters to you. We process it in line with China's Personal Information Protection Law (PIPL) and the platform rules of WeChat and Douyin. Please read this policy before you register. If you do not agree with it, please do not register or use the Service.

This policy covers the website (daojitong.pages.dev and its future official domain), the app, and the WeChat/Douyin mini-programs that share our account system.

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1. What we collect and why

We follow data minimisation: we collect only what a feature needs, and what can stay on your device stays on your device.

1.1 Information you provide

Type	Details	Purpose	Required
Account	Mobile number, password	Registration, sign-in, account recovery, cross-device sync	Required
Display name	A nickname you choose	Shown on your profiles and comparisons	Optional
Birth details	Date, time (hour and minute), place of birth (city or longitude)	Chart calculation, true solar time correction, ten-domain analysis and period calculations	Required for core features
Profiles for others	Birth details, name and relationship for people you add	Two-person comparison and date selection	Optional
Invite code	A code shared with you	Invitation records	Optional

1.2 Information generated while you use the Service

• Questionnaire and self-check answers and their scores;
• Calculation results: domain scores, period conclusions, guidance and date selection output;
• Check-in and progress records, achievements;
• Preferences such as theme, period and language.

This data is stored on your device by default (browser local storage on the web, platform storage in the mini-programs). It reaches our servers only when you sign in or switch on cloud sync, which exists so you can continue on another device.

1.3 Birth date, time and place

These are personal information that can identify you, and our core features cannot produce a result without the birth time. We use them only for calculation and display inside the Service. If you enter a birthplace we use it to convert longitude for true solar time correction. We do not access GPS or your live location.

1.4 AI assistant

When you use the AI assistant, the text you type and, if you have a profile, a short summary of the relevant profile data (domain scores, period conclusions) are sent to the large-language-model provider we use, in order to generate a reply. We do not send your mobile number, password or full profile. You can simply not use this feature.

1.5 Cloud sync (optional)

With sync switched on, your account, profiles, records and results are transmitted over HTTPS and stored in Tencent CloudBase (mainland China), keyed to the account bound to your mobile number. Only a session holding your login token can read it.

1.6 What we never collect

We do not collect contacts, call logs, SMS, photos, microphone or camera content, clipboard content, SIM details, your installed-app list, identity numbers, biometric data, precise GPS location, or your movement history. We do not embed third-party advertising SDKs and we do not track you across apps.

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2. Local storage and cookies

We use browser local storage and essential cookies to keep you signed in, remember your theme and language, and record that you have accepted these terms. In the mini-programs we use the platform's equivalent storage. We do not use advertising cookies. Clearing local storage signs you out, and profiles that were never synced cannot be recovered.

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3. Where we store data and for how long

1. Location: cloud data is stored on Tencent Cloud servers in mainland China. The English marketing site is static (no user data) and is served from a global CDN.
2. Retention:

- Account and synced data: from registration until you delete your account; deleted or irreversibly anonymised within 15 working days afterwards;

- Device-local data: under your control; removed when you delete it or uninstall;

- Operational logs (sign-in events, errors): no longer than 6 months;

- Transaction records: retained for the period required by law.

1. Data kept past its retention period is deleted or irreversibly anonymised.

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4. Security

• In transit: the whole site runs over HTTPS;
• Access control: cloud records are isolated per account and read only with a valid login token; administrative functions are limited to authorised staff and sensitive actions are logged;
• Least privilege: staff cannot access user data without an operational need;
• Passwords: never stored or displayed in plain text. Passwords are stored in an irreversible digest form today, and will move to salted server-side hashing when the server-side account system ships;
• Incident response: if a breach, tampering or loss occurs we start our incident procedure, mitigate, and notify you by in-app notice or message while reporting to the regulator as required;
• No internet environment is perfectly secure. Use a strong, unique password and contact us immediately if you notice unusual activity.

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5. Sharing, transfer and public disclosure

We do not sell your personal information. We share it only:

1. with your separate consent;
2. as needed to run a feature, with these providers:

- Tencent CloudBase — cloud storage, functions and sync;

- our large-language-model provider — your question and a short profile summary, only when you use the AI assistant;

- WeChat / Douyin open platforms — when you sign in or pay inside the respective mini-program;

- a payment provider, once online payment opens — order and amount information;

- an email provider — the content of messages you send us.

1. when required by law, or by a competent authority following due process;
2. in an emergency to protect public interests or your vital interests where consent cannot be obtained.

In a merger or acquisition the receiving party must continue to be bound by this policy, otherwise we will seek your consent again. Public disclosure happens only with your separate consent or where legally required, and after de-identification.

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6. Your rights

You can exercise the following through "Me → Account" or by emailing us. We respond within 15 working days.

Right	How
Access and copy	View any time in Me / Profiles / Records; request a copy by email
Correct or complete	Edit in the profile and account pages, or ask us
Delete	Delete records and profiles individually, or request deletion of all cloud data
Withdraw consent	Turn off cloud sync or stop using a feature; withdrawal does not affect prior processing
Delete your account	Submit the request in Me → Account; completed within 15 working days
Explanation	Ask us to explain this policy or our processing
Complain	Email us, or complain to the relevant regulator

Turning cloud sync off never blocks local use: calculation runs on your device.

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7. Minors

The Service is for adults. We do not knowingly collect data from children under 14 and do not offer the Service to them. If you are between 14 and 18, please read this policy with your guardian and use the Service with their consent. If we learn we have collected a child's data without guardian consent, we delete it promptly; guardians can contact us using the details below.

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8. International transfers

Your personal information is stored in mainland China and we do not actively transfer it abroad. Loading the English static site from outside China does not transfer account or profile data. If a cross-border transfer ever becomes necessary we will inform you, obtain separate consent and complete the required security assessment.

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9. Changes to this policy

We may update this policy. For material changes — purposes, categories of data, sharing recipients — we will tell you at least 7 days before they take effect through a site notice or in-product prompt, and ask for consent again where required. Previous versions are available on request.

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10. Contact us

• Operator: Xiamen Binglei Network Technology Co., Ltd.
• Privacy contact: godalsocrazy@163.com
• Website filing (ICP): in progress; the number will be published in the footer once issued
• Response time: within 15 working days

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Appendix: third-party services and SDKs

Name	Used for	Data involved	Can it be avoided
Tencent CloudBase	Sync, cloud functions, storage	Mobile number, profiles, records	Yes — leave sync off
LLM provider	AI assistant	Your question, short profile summary	Yes — don't use the feature
WeChat Open Platform	Mini-program sign-in	Platform identifier, mobile number (with your authorisation)	Yes — use password sign-in
Douyin Open Platform	Mini-program sign-in	Platform identifier	Yes — use password sign-in
Payment provider	Paid plan (once live)	Order id, amount, result	Yes — don't purchase
Cloudflare	Static hosting of the English site	No user data	n/a
KaTeX, open-source fonts and icons	Rendering formulas and UI	Runs locally; nothing uploaded	n/a