It is way above the pay grade of the readership here.
想想还有人 challenge RSI 的 prediction value 呢。还未敢在 blood on the street 買 就已经担心熊市或者错过牛市了
喜欢数据的可以用 % of stocks above 50 和 200 日均线 （向上的 trend) or below 50 和 200 日均线 （向下的 trend) 每日的
New highs new lows. When the new high number is extremely low, new low number is expanding rapidly everyday, start to buy hand over fist. 不会 catch bottom, but would be close enough to bottom.
Top 难预测很多 因為绝大部分人是追高 （贪心） buying on the small dip 的 power would last for a while. 反而 sell momentum 容易 exhaust.
