充电宝才是中国正能量下课铃才是中国最强音
[chōng diàn băo cái shì zhōng guó zhèng néng liàng xià kè líng cái shì zhōng guó zuì qiáng yīn]
A humorous or sarcastic expression translating roughly to 'The Power Bank Is China's Positive Energy; The Class-Ending Bell Is China's Strongest Voice.' It reflects a cultural observation mixed with irony regarding modern dependencies and the structure of school life in China.