It probably can not guarantee abnormal profit to use contrarian strategy in Shanghai stock market.

在上海股市使用反转策略，可能无法保证一定获得超额利润。

youdao

Further more, in the cross-section; I get the conclusion that the stocks with big size, stocks with low turnover and stocks with high price can earn large abnormal momentum profit.

进一步，进行横截面分析，分别按照规模、换手率、股票价格、市净率进行分析，发现大盘股、低换手率股票和高价格股票具有较大的动量净利润。

youdao

Once a stock has begun to show a profit, I start to look for abnormal behavior or weakness as a sign it is time for me to sell.

FORBES: Mimic Buffett, Lynch And O'Neil With Rules-Driven Investing