From Zhuge Liang of the Three Kingdoms' Book of Encouragement for My Nephew: My husband's ambition is to be lofty, to worship sages, to abandon lust and stagnation, so that the ambition of ordinary people remains and I feel sad. Endure flexion and extension, cut into pieces, ask questions extensively, and avoid being stingy; Although I have stayed for a long time, why harm the beauty? Why bother?