What was that Chinese program that showed on Cartoon Network?

The Chinese program that aired on Cartoon Network is likely "The Amazing World of Gumball," which, while primarily produced by the British studio Cartoon Network StudiOS Europe, features a blend of animation styles, some of which are influenced by various international styles, including Chinese animation. Another notable mention is "Big Buck Bunny," which is not specifically Chinese but showcases global animation influences. If you meant a specific Chinese series, "The King's Avatar" (Quan Zhi Gao Shou) is a popular Chinese animated series, though it may not have aired on Cartoon Network.