A stable positive income trading system must include a complete and controllable quantitative system of lightening positions, closing positions, adding positions, controlling risks and managing funds.

It will definitely provide historical data of any variety of stocks and futures in 5- 10 years.

There must be a firm capital curve and other actual combat results to verify.

These three are indispensable. I use Tian Zi No.1 quantitative trading system, which is very good. A good system for stabilizing positive returns still needs to know more about the market.