There are a lot of hackers who know Chinese, so it probably isn't gaining you any ground. See diceware.com for how to generate strong passwords (in many different languages). Also, use a password manager with a password generator for less sensitive accounts and so that you aren't reusing passwords.
I already use 1Password with min 20 characters, unless the site has a length limit ><
I was more curious about extending the characters past alpha numeric / special characters, to include Chinese characters as well. That would open up the number of characters required to brute force and probably result in relying on a collision. Until technology catches up.
