The Ahan Tongshan Cup is a Go tournament played with fast time controls: Each player has 30 seconds per move, along with 10 one-minute periods of extra thinking time. The format is
single elimination. As of 2025, the winner receives 200,000
RMB in prize money. The Ahan Tongshan Cup is the Chinese counterpart of the
Agon Kiriyama Cup in Japan. Both tournaments are sponsored by
Agon Shu. The winners of the two tournaments play against each other in the
China-Japan Agon Cup. ==Past winners and runners-up==