dangerous words. -The Analects of Confucius.

the language is insensitive. -"Lu Chunqiu Shirong"

It is better to be inferior than to be inferior. -Song Sima Guang's "Training frugally to show health"

is not inferior; Slightly inferior

Tang Yao abdicated and Yu Shun failed (Yi). -

Preface to Historical Records Taishigong, illness, repeated begging for abdication. -"the reflection of Wei Zhi he kui biography"