Tianyuan (Chinese: 天元; Pinyin: Tiān Yuán), literally meaning center or origin of heaven, is the center point on a Go board, i.e., tengen. It is also the name of a Go competition in China, which is the equivalent to the Nihon Ki-in's Tengen in Japan, and the Hanguk Kiwon's Chunwon. The winners of the Tianyuan and the Chunwon go on to play each other, in the annual China–Korea Tengen competition.
Tianyuan competition is sponsored by the Zhongguo Qiyuan, New People's Evening News and New People's Weiqi Monthly Magazine. The preliminaries is a direct knockout while the final is a best of three. The komi is 7.5 points. The winner's purse is 150,000 CY ($24,000).
Past winners and runners-up
|1987||Ma Xiaochun||2–1||Nie Weiping|
|1988||Liu Xiaoguang||3–2||Ma Xiaochun|
|1991||Nie Weiping||3–0||Liu Xiaoguang|
|1993||Liu Xiaoguang||3–1||Nie Weiping|
|1994||Ma Xiaochun||3–0||Liu Xiaoguang|
|1997||Chang Hao||3–1||Ma Xiaochun|
|1998||3–2||Wang Lei (Go player)|
|2002||Huang Yizhong||2-0||Chang Hao|
|2003||Gu Li||2–1||Huang Yizhong|
|2009||Chen Yaoye||2–0||Gu Li|
|2017||Lian Xiao||2-0||Chen Yaoye|