Is teacher Kangkang's dubbing true or false?

It's true. Teacher Kangkang's dubbing is true. Dubbing is the process of adding sound to movies or multimedia. In a narrow sense, it refers to the language dialogue in which the voice actor adds voice to the character or replaces the character in the original film with other languages. At the same time, due to voice errors, the process of restoring the dialogue for the segment by the original actor is also called dubbing. When recording photography, the actor's voice or singing voice is replaced by others, which is also called dubbing.