In the Announcement to Kang, it is said, “He was able to make his virtue illustrious.”

In the Tai Jia, it is said, “He contemplated and studied the illustrious decrees of Heaven.”

In the Canon of the emperor (Yao), it is said, “He was able to make illustrious his lofty virtue.”

These passages all show how those sovereigns made themselves illustrious.