With courage and heroism, he followed Cao Cao, joined the army for many years, fought in the south and fought in the north, and made numerous achievements. From attacking Yuan Shao in Guandu, he fought bravely and beheaded Yuan Shao's department, Chun Yu Qiong. He also attacked Yuan Shaozi Tan and Shang Yang and beheaded his general Jin Yan. Later, Cao Cao asked Sun Quan to take a holiday. After Cao returned to Li, Liu stayed with Zhang Liao and Li Dian in Hefei. Anyone who has read The Romance of the Three Kingdoms knows that Le Jin is not as good as Zhang Liao, and since the history books can combine Zhang Liao and Le Jin into one, it can be seen that Le Jin and Zhang Liao are evenly matched. In that case, why did Zhang Liao become famous in World War I in The Romance, but Le Jin became a second-rate or third-rate military commander? The reason should start from the historical records. There are about 900 words in the Yue Jin part of The Reflection of the Three Kingdoms, Shu Wei Zhang Le Zhang Xuchuan, but the part about Zhang Liao is far more than this word. However, there were two wars in Zhang Liao, and the Lejin part didn't elaborate on them. Both of them participated in the wars rarely. Before xiaoyaojin, Lejin's position was higher than that of Zhang Liao. Under normal circumstances, the status and achievements of Lejin can't be ignored by historians, but isn't it wrong for Chen Shou to collect materials? Not necessarily, because there is not a Pei annotation in Le Jin Zhuan, it can be seen that other historical books have not recorded it in detail, which shows that there is something about the lack of detailed historical records, but this history has been completely covered up.