a gentleman 's agreement
Gentleman's agreement, Chinese idiom, Pinyin is junz ǐ Xi é D ì ng.
Idiom explanation
An agreement concluded by both parties through oral commitment or exchange of letters without written signature has the same effect as a written treaty. This is used in international affairs, and later it is also used as a formula agreed in advance. It is also called "gentlemen's agreement".
a gentleman 's agreement
Save the time by changing the customs - kuāng sú jì shí
established by the people through long social practice - yuè dìng sú chéng