说明：  能准确判断在最高点出现之后，在高点及时做空，最低点出现以后在低点及时做多。 大小资金都可操作，反转月收益翻倍不是问题。
(Be able to accurately judge that after the highest point appears, short at the high point and long at the low point after the lowest point appears. Both large and small funds can be operated, reversing the doubling of monthly income is not a problem.)