Conversation so far:
What was Yi Jianlian's CBA career?
Yi Jianlian signed a professional contract with Chinese Basketball Association side Guangdong Southern Tigers.
When did Yi Jianlian's CBA career start?
Adidas invited Yi Jianlian to attend the company's ABCD Camp in 2002. After returning to China later that year, he signed a professional contract with Chinese Basketball Association.

Question: did he go?
Self-contained rewrite: Did Yi Jianlian go play professionally with the Chinese Basketball Association?