"Years don't live, the four seasons flow", and the words of "The History of the Three Kingdoms Wu Shu Sun Shaochuan": "Years don't live, the four seasons flow, and fifty years suddenly come."
This sentence is a feeling that time cannot stop, just like running water. A letter written by Kong Rong to Cao Cao, one of the "seven sons of Jian 'an" in the late Eastern Han Dynasty. In his letter, Kong Rong advised Cao Cao, who was in power at that time, to recruit Xiaozhang Sheng, a celebrity persecuted by Sun Ce and Sun Quan brothers, otherwise Xiaozhang Sheng would "live in a secluded place, and his life would be hard to protect".
After Cao Cao received the letter, Zhang Xiao was appointed as a captain, but before that, Zhang Xiao had been harmed by Sun Quan. Zhang Yan, a writer at the end of Ming Dynasty, compiled this letter into A Collection of 133 Famous Writers of Han, Wei and Six Dynasties, entitled On Xiaozhang Sheng.