After a bull-bear cycle switches, when it falls back to the bottom, I personally only recommend buying BTC first. My personal common methods are as follows:

1. Buying the bottom in a large cycle: Wait until the BTC price drops by more than 70%. At this time, you can buy in batches. It will not fall much further. This stage is suitable for buying small drops and buying large drops.

2. Buying on the right side of a large cycle: Wait until the market meets the golden pit of daily K or weekly K, head and shoulders bottom and other K-line patterns with bottoming significance, and the moving average system also shows a bottom-adhesive upward divergence pattern.