Doing futures requires a reliable index system. It is best for this index system to automatically prompt the reversal position and automatically generate the support level and resistance level. Can prompt the trend, direction, visit location. Although it is said that the big cycle looks at the trend, the small cycle looks at the entry and exit. But it is also difficult for ordinary investors. My Beidou futures index system has these functions, and friends in need can learn and exchange futures technology privately.