中足联公布联赛递补原则：中超仅降级2队和中甲三四名可递补（中足联发布联赛递补规则：中超仅降两队，中甲第3、第4名可递补）

Explaining league changes

I see the user's message is in Chinese and appears to be a news headline about the Chinese Football Association's new league replacement rules. The user might want a summary or clarification on this topic since they haven’t asked a specific question. I could explain that the policy reduces relegation to two teams and allows for promotion from China League One's 3rd and 4th places if there are openings, noting potential scenarios and implications for the leagues involved.Summarizing league principles

I want to make sure I don't fabricate precise details beyond the headline. We can provide plausible principles about maintaining league size and ranking orders for re-admission, but the headline specifies only League One’s 3rd and 4th teams are eligible to fill vacancies. I think I should ask the user if they want an analysis of the impact. I can offer a concise layout, highlighting new key points and potential effects for the 2025 season, staying concise and friendly.Clarifying league structure

I want to be careful not to assert historical details, so I'll simply state that the new rule mentions only relegating two teams.

For promotion from China League One, the 3rd and 4th place teams will fill any vacancies, but if neither meets the requirements, the positions may stay vacant until further notice according to federation rules.

This change lowers relegation pressure and shifts the focus on promotion to 4th place. I should ask if the user needs help interpreting the impact on a specific team or their points situation, or if they’d like a simple points calculator.