Recently notching its 18th year, Shanghai Open (SHO) is the oldest ultimate tournament in China. In 2016, it hosted 30 teams and over 450 players from all across Asia. In other words, SHO is the biggest and most competitive tournament in the country, complete with the best fields, the best party, and the most booze. SHO is traditionally held on the first weekend of June.
For a complete list of tournaments around Asia, head here.