Badminton mixed doubles pair Chen Tang Jie-Toh Ee Wei have assured Malaysia of at least a bronze medal after powering into the semi-finals of the world championships in Paris.br br Meanwhile, Hoo Pang Ron-Cheng Su Yin fell short after losing in their other quarter-final match against world No. 2 pair Jiang Zhenbang-Wei Yaxin of China on Aug 29.