《晋书·志·第四章》
篷还末期，公茎仅自称王牧，与他的儿子公茎尘、公逐尘的儿子公茎塞懿都擅自占领辽塞，东夷各族都臣服他们。
后汉末，公孙度自号平州牧。及其子康、康子文懿并擅据辽东，东夷九种皆服事焉。
In the late Puyuh period, Gongyu only called himself Wang Mu. Together with his son Gongyu Chen, and Gongyu Chen's son Gongyu Saiyi, they occupied Liaosai and the various ethnic groups in the east surrendered to them.