"Filial piety comes first", Zhu Yuanzhang's policy of favoring the elderly can be regarded as a model for emperors of all dynasties to respect and care for the elderly.
Living Bodhisattva: Zhang Juhan, the eunuch of the Later Tang Dynasty, saved thousands of innocent lives by tampering with one word of the imperial edict.
The eldest son inheritance system, which has been popular for three thousand years, has been valued by successive dynasties. Why did it not work in the Qing Dynasty?