? What do you mean, report up and report down? Where is the source?

Source: Zuo Zhuan; In the 16th year of Huan Gong: "Wei fell in love with him and gave birth to an anxious son, belonging to all the emperors. "Three Years of Zuo Zhuan Gong Xuan": "The official newspaper Zheng Zi's concubine, named Chen Gui, was born in China, and her son Zang. 」

Interpretation: Yan: the younger generation of men and older women commit adultery; Newspaper: Old men commit adultery with young women. Generally refers to men and women.

Pronunciation: Shangzhuang Xiabao