When buying and selling stocks, all the funds are used to buy stocks, and there is no remaining funds. For example, if you have 100 yuan, you buy stocks with this 100 yuan. This is called Man Cang.
Second, covering positions (bǔ cāng) (money market terminology) means that investors buy the same kind of securities on the basis of holding a certain number of securities. Covering the position is a buying behavior because the stock price falls and in order to reduce the stock cost. Covering positions is a passive contingency strategy after being locked up. It is not a good method to solve the problem in itself, but it is the most suitable method in some specific situations.