2. Previous champions and winning history: the first: Masaki Takemiya (Jin,), the second: Masaki Takemiya (Jin Xiuzhuang,), the third: Masaki Takemiya (yoda norimoto, Cao Dayuan), the fourth: Masaki Takemiya (Ma Xiaochun, Cao Xunxuan), the fifth: Yoshida (Li Changhao, Nie Weiping, Xu Fengzhu). Ma,) Eighth: Li Changgao (Satoru Kobayashi) Ninth: Yu Bin (Kobayashi Kuanyi, Li Changgao, Chengcheng) Tenth: Yoshida (Li Changgao, Yu Bin, Ma) Eleventh: Yoshida (Chang Hao, Li Changgao) Twelfth: Cao Xunxuan (Liu Shixun, Ding Wei, Ma Xiaochun). Cao Xunxuan)15th: Zhou Heyang (Jiang Zhujiu, Sri Nishi, Sancun Zhibao)16th: Yu Bin (Park Bingkui, Zhao Zhixun, Song Taikang)17th: Zhang Xu (Li Changgao, Yu Bin, Zhao Hancheng)/kloc.