The 2015 World Judo Grand Prix will be held from Nov. 20 to 22 in Qingdao, the coastal city in east China's Shandong Province, the Chinese Judo Association announced here on Thursday.

The Grand Prix serves as one of the qualifying tournament for next year's Rio Olympic Games. 

Nearly 600 judokas from 58 countries and regions will take part in the tournament.

China's world champion Yu Song will participate in the women's over 78-kilogram category.