Yes, futures open at 9: 00 a.m. and close at 1 1: 30, with an interval of 2 hours and 30 minutes. The significance of setting the 15 minute bar line is:

1, futures are T+0 trading, and the market in the morning is fierce, and investors' trading may be intensive, so 15 minutes is set for two and a half hours.

2. Futures is margin trading, and the risk is relatively greater. If the market is fierce in early trading, a break of 15 minutes will help investors calm down and operate rationally. The middle time from 9: 00 to11:30 is 10: 15, and the rest time of each bar is set to10:15 ~10: 30.