中足联发布准入规程：中超至少要5个梯队，中甲4个中乙3个（中足联公布准入新规：中超至少设5支梯队，中甲4支、中乙3支）

Explaining club licensing requirements

I'm explaining that club licensing involves youth development teams, likely from U21 to U13. Historically, the Chinese FA has had specific requirements, like the 2019 rule for CSL clubs to have youth teams at various levels. The new "5" requirement increases focus on youth development compared to the previous "4."

I can suggest compliance strategies for clubs, like partnerships with schools, shared resources, and the need for qualified staff. Since the user isn't asking a specific question, I should inquire if they need further interpretation or links.