What's the use of first-class chess and cards?

According to Netease News, the first-class chess player's Go certificate is a proof of the level of Go and is also recognized by the society. It is an honor for Go lovers to have a Go Grade Certificate, which is a certificate for participating in graded and staged competitions. With the increasingly strict examination requirements, you need a certificate to get to the next level, and it is impossible to skip the exam.