At the age of 15
2021-05-24 17:00:12
In 537 B.C.（the 5th year of Zhaogong，Duke of the state of Lu），Confucius said，"I set my heart upon learning at the age of fifteen." （the Analects·Weizheng）
Edit：卢娜娜
The copyright of the article and the picture belongs to the original author. If there is any infringement, please contact to delete it