KDJ has gold forks to buy and dead forks to sell. Simply put, there is knowledge in it, what kind of gold fork is useful, and what kind of dead fork is sold. Just learn and practice the operation slowly.

Same method as MACD above. Golden fork/dead fork.

When you are the Hang Seng Index, there is no fixed index that can solve all the problems. You must study in a diversified way to make a profit.