Tang Nengtong's moving average setting is based on the principle of 5 trading days per week and 20 trading days per month. So it is 5 10 20 60 120. Lao Yatou mainly looks at 5 10 20. The medium and long-term Lao Yatou is 20 60 120. There is a video of Tang Nengtong's 2011 stock trading technology on the Internet.