The Tianyuan is one of the major Chinese tournaments. (天元 or tiānyuán is Chinese for "Origin of Heaven", the centre point of the board.)
Time control: two hours and forty five minutes of main time, followed by five periods of 60-second byo-yomi. In 2013 the first prize was raised to 200,000 yuan for the winner and 80,000 for the runner-up (previously 150,000 and 75,000).
See also Tengen-Tianyuan match.