A stock proverb says: In the stock market, everything can be deceptive, except for trading volume which cannot deceive. Trading volume is an important signal but relatively difficult to grasp, and only experienced investors can identify it. Trading volume is the life force of the stock market, while stock prices are merely its surface phenomena. Trading volume usually precedes stock prices, and in the stock market, there is the saying "volume leads"... This is part of the basic knowledge for beginners in securities networks.