Why is letting bullets fly a positive phrase?

The reason for the end is explained as follows:

"Let bullets fly" is a radical phrase because it consists of the verb "let" and the noun phrase "bullets fly". The phrase "Pianzheng" is a common Chinese phrase structure, which consists of a verb indicating an action or a state and a noun phrase indicating an object or a state being acted on. In this phrase, "let" is a verb, meaning to guide and make, and "bullet flying" is a noun phrase, meaning that bullets are flying. Through the combination of verbs and noun phrases, the meaning of the whole phrase is to guide or guide bullets to fly.