For more:
https://news.cgtn.com/news/2022-01-30/Beijing-2022-Looking-for-a-loophole-in-the-closed-loop-system-17eZpo1hk5O/index.html

All Olympics-related venues and hotels are operating under a closed-loop management system to protect the safety of both Games-related personnel and local communities. The system sounds ideal, but is it practical?

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