What server does China play on LoL?

Excuse me, could you please clarify something for me? I've been hearing a lot about League of Legends, or LoL as it's commonly known, and I'm curious about the server situation in China. Specifically, I'm wondering which server does China play on for LoL? Is there a dedicated server specifically for Chinese players, or do they play on a global server shared with other regions? I'm really interested in understanding the logistics behind this, so if you could provide some insight, I would greatly appreciate it. Thank you in advance for your help!