Why is there no Mandarin behind the new Tom and Jerry?

Limited. The reason why Mandarin was cancelled in the new version of Tom and Jerry's later dubbing was that the broadcast of this cartoon in Chinese mainland was restricted and censored. The new Tom and Jerry features a farce, depicting a pair of incompatible cats and mice: the war between Tom and Jerry. In the film, Tom often uses cunning tricks to deal with Jerry, while Jerry often uses loopholes in Tom's tricks to escape his persecution and get revenge.