1) Get urself fully patched chinese client.. I suggest u using RedCabal client which u can get at:
2) Install it.
3) Get the account to the private server u want to play.
4) Get the private servers patch ur wanting to play on.
5) Install the patch in the chinese client folder.
6) Run the game and login. Accept the agreement.
Optional
If u want to have english patch.
7) After accepting the agreement close the client.
8) Get urself an english patch at
9) Extract the english patch into ur cabal client folder.
10) Start the client.
11) Have fun =)