This is the complete version of the stock market proverb as follows:
If there is a big drop in the morning, you can increase your position; if it rises sharply in the morning, you should reduce your position; if it rises sharply in the afternoon, you should only reduce your position; if it falls sharply in the afternoon, you can buy it the next day; if it falls sharply in the morning, you should reduce your position. Don't sell tickets, add T 0 on dips, pull up in the afternoon and don't chase the rise, reduce your position on T 1 when it's high, pull up in the morning and wait until 10 o'clock.
In the afternoon, pull up and look at 2 o'clock. The stock is sold at the highest point. If the stock is strong, it will be closed at 10 o'clock. If the stock is not strong, it will be closed at 2 o'clock. It is no luck to control the position. Rolling operation is the best strategy.
No rule can win every battle in the stock market, but some experiences summarized by predecessors will always avoid many detours.
Extended information
The predecessor of the stock market originated from the Dutch trading of Dutch East India Company stocks on the Amstel River Bridge in 1602, and the formal stock market was the earliest appeared in the United States.
The stock market is a place where both speculators and investors are active. It is a hot and cold weather table for the economic and financial activities of a country or region. Undesirable phenomena in the stock market, such as short selling without goods, can lead to stock market crashes, etc. The occurrence of various hazards. The only constant thing about the stock market is that it changes all the time. Mainland China has two trading markets, the Shanghai Stock Exchange and the Shenzhen Stock Exchange.