Is “Alienating Jue and Si, and the old ox licking its calf” true?
attested in history
The 'Book of the Later Han: Biography of Yang Biao' records Yang Biao's advice against moving the capital, his response to Cao Cao about 'an old ox licking its calf,' and his refusal of Wei titles after the abdication. 'Romance of the Three Kingdoms' vividly preserves his image as a loyal minister of the Han.
Yang Biao
Both official history and fiction depict him as steadfastly loyal to the Han dynasty, advising against moving the capital, responding to Cao Cao with 'an old ox licks its calf,' and refusing Wei titles.