how is "weapon master" pronounced in Japanese and Chinese?

Answer 1

The pronounciation for "Master" in Chinese is either "Shu Fu" or "Da Shu" (great master), in Japanese, it's "Teishu".

Although "weapon master" is not a common term, but in general it can be translated into "Wu Chi Da Shu" in Chinese or "Bu Ki Teishu" in Japanese.