官方：大连英博U21与大连涵瑀在海口进行单回合冲乙附加赛（官宣：海口承办大连英博U21对大连涵瑀的冲乙单回合附加赛）

Clarifying playoff details

I see there's a change in policy where the U21 champion can compete for promotion to China League Two through a playoff against a Champions League team. I need to be careful with the facts because my knowledge is up to date only until October 2024. It seems this event might happen in 2025. I think I should ask the user what specific information they want: schedule, rules, or some analysis? I could summarize what a single-leg playoff means and discuss potential tie-breakers, too.Summarizing the playoff announcement

I’ll confirm the details about the playoff announced by the CFA, specifying that it will be held in Haikou, and the winner earns a spot in the 2025 China League Two. The match will be at a neutral venue, with extra time and penalties if tied. I think I should mention that I don't have the exact text of the announcement, so I'd say the date is still to be confirmed. I’ll ask the user if they want key points or a pre-match analysis.Explaining the 冲乙附加赛

I’m considering offering a brief overview of what the 冲乙附加赛 is about and explaining its implications for each team. I want to touch on potential roster constraints, including rules about U21 team composition, like all players needing to be under 21. If they get promoted, I think they may need to register as an independent club. I’ll summarize key points and ask the user what specific details they’d like to know, making sure to use careful language and suggest checking official announcements for accuracy.Preparing to respond succinctly

I’m planning to reply in a clear and brief way, asking if they need information on the format, schedule, or highlights of the event. I could summarize the official notice for them, but first, I would need them to share it or give me permission to fetch it myself. This way, I can ensure I’m providing the most accurate and relevant information. Let's see how they respond!