Market characteristics: Virtual market: Technical analysis is the main focus, in which transaction reflexivity is the main method and goes against popular thinking. The U.S. stock market: Value investment is the main focus, focusing on corporate performance, discovering potential, and research reports. The A-share market: Technical analysis and value investment are mixed, with technical analysis being the main focus and value investment being the supplement. Choose different methods according to different markets, and never put the cart before the horse.