Im a Russian student in Tokyo and I have a 2-year visa. Do I need a tourist visa to China?

Im a Russian student in Tokyo and I have a 2-year visa. Im going with a group of Japanese tourists to Beijing for 4 days. Do I need a tourist visa? I read on the website that there is an agreement between Russia and China for group travelling and the participants don't need visa. Is it true? Or is it true of only Russian groups, not of Japanese?