Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.

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2025年岁末，中央经济工作会议在北京召开。回望“十四五”，习近平总书记感慨万千：“我们有效应对各种冲击挑战，推动党和国家事业取得新的重大成就，第二个百年奋斗目标新征程实现良好开局。”