THE East Asian Games, a biennial multi-sports event first introduced in Shanghai last year, is likely to be held every four years after the second edition in Pyongyang, North Korea in 1995. Lai Yue-wing, honorary assistant secretary of the Amateur Sports Federation and Olympic Committee of Hong Kong, said the East Asian Games countries unanimously agreed to extend the time span in between the Games at a meeting in Taipei this week. He said: ''The representative of every member country thinks that having the Games every two years is too close. ''It would be difficult to get sponsorship if the event is held with such regularity and it would also be tough on the sportsmen and women because there are also the Asian Games and the Olympic Games.'' Former Soviet state Kazakhstan was accepted as a new member to the East Asian Games fold while Guam, who were a guest participants at the inaugural Games and not eligible for medals, were accepted as an associate member. This means that Guam can compete for medals in Pyongyang but have no voting rights. Other full members of the East Asian Games are China, Taiwan, Japan, South Korea, North Korea, Mongolia, Macau and Hong Kong. Lai also said the Pyongyang Games is likely to feature 17 sports, with bowling, taekwondo and soft tennis likely to be added to the original programme of 14 events.