engagement
A hundred year appointment, a Chinese idiom, Pinyin is B ǎ ini á nzh ī Yu, which means engagement. From "mirage in the tower · double set".
The origin of Idioms
Li Yu's "mirage in the tower · double set" in Qing Dynasty: "I don't know if I want to make a hundred year appointment with my young lady, but I don't know if I can follow her."
Analysis of Idioms
A hundred year old Alliance
Idiom usage
As the subject or object; of engagement.
engagement
throw oneself down at sb . 's feet in admiration - wǔ tǐ tóu chéng