What is the meaning of the name is right and smooth

Name is just and smooth interpretation:

Name: name, name; smooth: reasonable, smooth. The original refers to the name justification, speak reasonably. Later, it refers to doing something in the name of justification, reason also makes sense.

[Pinyin] [míng zhèng yán shùn]

[Source] The Analects of Confucius - Zilu: "If the name is not correct, then the words are justified; if the words are justified, then the matter will not be accomplished."