Contact
Contact us
Questions about a calculator, a course, or a consultation — we read everything that comes in.
How to reach us
- Phone / Zalo: 0787.23.11.20
- Address: Floor 4, TT-09 Langs Village, 82 Chua Lang, Lang Ward, Hanoi, Vietnam
Please write in English or Vietnamese. Replies in English may take a little longer.
Before you write
If your question is about a chart, it helps a great deal to include the date, time and place of birth you used, and which calculator you were on. Most “the result looks wrong” questions turn out to be a birth hour near a boundary or a solar-term edge case, and those are quick to resolve once we can see the input.
Frequently asked questions
Do you charge for the tools?
No. Every calculator is free and needs no account.
Can I book a personal reading?
Yes — consultations are arranged with individual practitioners. Contact us and we will tell you who is available and in which language.
I found a mistake in a calculation. Will you look at it?
Please send it. Classical calculation has genuine edge cases — solar-term boundaries, leap months, the Zi hour — and reports like these are how the engines get corrected.