Keep the promise
It is said that the operator is simple and the giver is broad.
Idioms and allusions
Source: the language version of "Mencius heart down": "those who speak near and point to far are good at speaking; those who abide by the contract and do erudition are good at Tao."
Example: Li Zhi's answer to Geng Sikou in Ming Dynasty: "this is the right pulse, the most easy and simple learning, and the way of ~."
Discrimination of words
Usage: used as predicate and attribute; used in writing
Chinese PinYin : shǒu yuē shī bó
Keep the promise
Horizontal needle and vertical line. héng zhēn shù xiàn