The CSRC prohibits fortune telling.

How did the CSRC and the Exchange discover inside information?

In China, the government can basically check anything it wants. The key is whether it wants to check it or not. The so-called use of inside information is easy to verify. Because you want to make a profit, you must buy relevant stocks, either by yourself or by relatives and friends. As long as it can be confirmed that the information of the person who bought the stock was obtained from this insider, it will be verified. Generally speaking, the current channels of transmitting information by electronic means, such as telephone and SMS, e-mail, etc., can be completely monitored. Of course, if the anti-reconnaissance ability is very strong, it is difficult to obtain evidence only by word of mouth or preset password.