Considering user request

The user has asked about a Chinese sentence regarding the Taishan team's winter training and the absence of three young stars from national team training. They might be looking for a news summary or an article. I'll need to provide a concise write-up and maybe ask if they want just the news, an analysis, or details on why the absences happened. Key points could include roster changes, possible reasons like injuries, and other details, all while keeping it brief.