Passage: In the tournament China, South Korea and Japan have the right to automatically enter the competition, while other participants have to go through a qualifying round. Other participants that take part are Taiwan, North Korea, Northern Mariana Islands, Guam, Hong Kong, Mongolia, and Macau. Australia, being a non-member, was invited to take part in the 2013 tournament.In 2005 there was also a combined points competition in 2005, where the results of the men's and women's teams were added together (not including qualifiers).

Question: What were three countries involved in the tournament?
China, South Korea and Japan