[paulddraper]

FWIW, family name is almost one syllable (Li, Yang, Wu, etc.)

Though that only helps a little because loads of given names are also one syllable.

Fun Fact: 300,000 people have the name "Zhang Wei" [1]

[1] https://www.xinhuanet.com/english/2020-01/20/c_138721082.htm

[numpad0]

Modern Chinese family names are often one syllable, but China and Japan do not share language nor have much ancestral connections, and Japanese family names are usually not one syllable.