I ve read this article in the "yomiuri shimbun" on line/english edition, few days ago. Maybe if you contact this club, they can adress you to someone in Tokyo.
"Tai chi could be described as a sequence of slow, graceful movements that appear to be a cross between yoga and meditation. Performers look as though they are imitating the movements of a bird.
The martial art, which originated in China, has promoted friendship between tai chi clubs in two countries--one in Tonami, Toyama Prefecture, and the other in Harbin, capital of Heilongjiang Province, China.
The friendship dates back to 1980, when the city-run Tonami General Hospital and the Heilongjiang Provincial Hospital started exchanging doctors for training.
In the autumn of 2004, a Chinese doctor, Shao Mingji, 50, from Heilongjiang, met Koichi Watanabe, 63, a tax accountant, as they were strolling near the Tonami hospital.
Shao suggested that Watanabe practice tai chi with him the following morning at the Tonami City Tulip Park. "I wasn't so keen at first. But I began to invite friends to our practice sessions," Watanabe said.
After Shao returned to China, Watanabe inaugurated the Tonami Tai Chi Club. Though the club has no coach, about 30 members practice early in the morning every weekday.
At the invitation of the Heilongjiang hospital, 16 members of the Tonami club and the city's Japan-China Friendship Association began a four-day tour of Harbin on Friday. Their itinerary includes exchanges with tai chi performers in Heilongjiang."