That's too absolute. Understanding and finding the right method is key. My father's personal experience can attest to this. To summarize, in 1992, he invested over 40,000 yuan in the stock market, borrowed from my cousin who was working in Japan, to buy shares in Shenzhen Bao'an. Within a few months, it reached 320,000 yuan, driving the whole family crazy. After that, it fluctuated. I remember buying a Chengdu public welfare stock; the market was booming, but it didn't rise, infuriating him. At its peak, it reached over 700,000 yuan, of which 200,000 yuan was used to buy shares in Shandong Jianning, hoping for its IPO—the outcome is well-known. After several years of struggling, he was left with only 30,000 yuan. My mother forced him to quit the stock market, citing health risks. In 1995, I graduated from university and planned to start my own business. He gave me that 30,000 yuan, which I spent in a few months. In early 1997, I earned my first big sum of money, 160,000 yuan, and paid him back the 30,000 yuan. After years of reflection, he developed his method, reinvesting the 30,000 yuan in the stock market, rotating through steel stocks and buying what he considered cheap. When I entered the stock market in 2006, he held Maanshan Iron & Steel shares worth about 450,000 yuan. I had invested over 4 million yuan, then experienced four consecutive days of limit-down trading on May 30th. He switched from Maanshan Iron & Steel to Jiuquan Iron & Steel, reaching a peak of 6 million yuan during the bull market. Conversely, my highest investment was less than 10 million yuan, and when the bear market came, my lowest was 3 million yuan. He also lost half of his investment, and then it was back to switching stocks and rotating. In recent years, he has been rotating through bank stocks, currently worth tens of millions of yuan. After breaking even, I focused on low-risk investments, seeking uncertain opportunities. In 2017, I left the A-share market with approximately 7 million yuan in assets. The key to investing and speculating is finding a method that suits you.