China Naming Network - Weather knowledge - What dish of water is used for the auxiliary satellite water method?

What dish of water is used for the auxiliary satellite water method?

I don't understand. 、、、、、

The auxiliary star water method is correct in site; Both Huang Shigong and Liao Gong used it in ancient times.

Found it in Baidu official website-

I see there are several answers to this question-

It should be a site.