The name is Yongkang, please give me the name, the reason for the name and the source of the ancient text.

Lin An.

Yongkang means similar to An, but since he is a man, he has his own pride. "Shuowen" says: "Lin is a big deer." It is used to describe outstanding people. Sima Xiangru's "Zixu Fu" of the Han Dynasty also said: "Shooting the Elk Foot Lin." In history, Yongkang was the reign name of Murong De, and he had a younger brother also named Murong Lin. Of course this is nonsense.