说明：  通过设定股票池，本文是设定为沪深300与中证500，根据策略挑选股票，按一定比例买入，本文设置是全股票池的top 1%。 根据设定迭代周期，本文设定的是20个交易日，然后重复上述操作
(By setting the stock pool, this article is set to Shanghai and Shenzhen 300 and China Securities 500. According to the strategy, stocks are selected and bought according to a certain proportion. This article is set to be the top 1% of the whole stock pool. According to the set iteration period, this article sets 20 trading days, and then repeats the above operations)