Catch the mountain and choose the yellow calendar.

Because the market is unique to China, it must be based on the lunar calendar, which is usually called the lunar calendar according to the customs in China. Each market has a fixed opening date, some are 147, some are 369, some are 258, and some may be 15. Every place is different. You'd better ask the local experienced elders, who usually have a bottom in mind. There are many things in the market, some of which are planted by farmers themselves, and the prices are more affordable, but we can't generalize.