Okay kiddo, let me explain to you what China Securities Regulatory Commission (CSRC) is. You know how mommy and daddy work, right? They work for a company and they have to make sure that everything they do is safe and fair, right? Well, just like how mommy and daddy's company has rules, there are rules for companies that sell stocks and shares (which is kind of like selling a little piece of the company).
The CSRC is a special group set up by the Chinese government to make sure that the rules are followed and that everything is safe and fair in the stock market in China. They are like the grown-up's police officers for the stock market. Whenever there is something wrong or unfair, they investigate and make sure everyone is following the rules.
The CSRC makes sure that companies are telling the truth about what they're selling and how much they're worth, so that people who buy stocks and shares can make informed decisions. They also make sure that there is nobody cheating - like saying things that aren't true or taking advantage of people who don't know any better.
In other words, the CSRC is like the referee of the stock market, making sure everyone abides by the rules, playing fair and that everyone has a good time.