Buying high and selling low is the iron law of the stock market. If you can't do it, every transaction will make a big profit and a small loss.

Buy high-in order to make people follow Zhuang, so as to sell at a higher price.

Sell low-continue to suppress the stock price, causing panic selling and attracting funds at a lower price.

Stock trading refers to buying and selling issued and listed stocks among stock investors at market prices. The place where shares are publicly transferred is the stock exchange first. At present, there are only two exchanges in Chinese mainland, namely Shanghai Stock Exchange and Shenzhen Stock Exchange.