After chatting with many subjective traders, it is not surprising that the most popular trading level for BTC is still 4h. The reason is simple: a trend market has about 8-16 candlesticks, and the holding period is 2-4 days. The sub level of 30 minutes intervention is the most comfortable trading level, except for a few hours when the order is first placed, and there is no need to stay up late to monitor the market. ＃trading