Of course not. Before point B or point S is issued, the trading lines of traders in Yimeng, Shanghai are all integrated with various indicators, such as revealing secrets, plate vibration and so on. Moreover, the BS points confirmed by traders will not disappear after closing every day, and all BS points in history will not disappear, which can be used as the basis of facts and will never be corrected by future functions. The landlord asked this question because he didn't know much about traders. He suggested watching more training videos. It is best to attend local training courses and learn how to use traders better, instead of blindly operating.