I don't know what kind of manipulation you mean, T+0 operation and two-way trading. There are few domestic varieties, but for securities, there are many trading modes and various arbitrage methods emerge one after another. For experienced futures traders, these are considered to be highly operable compared with securities that can only buy more but can't fully preserve their value. However, retail investors are not as good at futures as stocks, with small funds, poor ability to resist risks and low ability to judge megatrends, and are easily scared away by intraday fluctuations.