I suggest you read Cao Renchao's On Potential, Debate and Harmony, and combine it with practical operation. Mr. Cao was born in a poor family of retail investors, starting from HK$ 5,000. He has been standing in the stock market for 40 years and is now worth at least 200 million Hong Kong dollars. He condensed his 40 years of experience into these three books, teaching us retail investors to take fewer detours and learn from his experience. At the same time, all royalties are donated to several hope schools in the mainland to repay the society. Support the original, it doesn't cost much. The simplified version of On Sex has not yet been published. The first two books add up to 70 yuan.