Yong-le: Year 2, Month 6, Day 4
10 Jul 1404
The Company Commander Li Cheng and others pacified and instructed Chen Yi-fu and others who had roamed to the maritime islands, and brought them back. The Emperor praised and rewarded them. Yi-fu and the others said: "The wanderer Ye De-yi and others are still on Ping-hu in the Eastern Ocean and have not yet returned." Thus, Cheng was again sent with Yi-fu to take Imperial orders and to go and pacify and instruct them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 0565/66