Pai Yun-Yiao

Pai Yun-yiao (; born 14 March 1969), also known as Elva Adams, is a Taiwanese taekwondo practitioner.

Early life and education Pai was born in Taipei, Taiwan on March 14, 1969. She won a gold medal in flyweight at the 1987 World Taekwondo Championships in Barcelona. Pai won a bronze medal in women's flyweight at the 1988 Summer Olympic Games in Seoul, South Korea, where taekwondo debuted at the Olympics as a demonstration sport. She won a silver medal at the 1989 World Taekwondo Championships, after being defeated by Won Sun-jin in the final.

As of 2016, Pai works as vice president of business banking at Wells Fargo. She coached the United States women's taekwondo team at the 2014 World Taekwondo Championships in Mexico, where they won bronze. In 2016, she won the silver medal for Woman's Team Over 30 at the World Taekwondo Poomsae Championships in Lima, Peru. In February 2024, Pai was appointed president of Kombat Taekwondo's central United States region.

Personal life Pai is a naturalized American citizen. She resides in San Antonio, Texas.

Pai married her coach, Raymond Hsu, at age 17. They have since separated. As of 2016, Pai's romantic partner is Team USA Taekwondo coach Brian Singer.

Pai has two children.