Jinan, China - China's Liu Zige knocked over one and a half seconds off Jessica Schipper's 200-metre butterfly world record Wednesday with an astonishing swim at the national swimming championships in Jinan.

Liu recorded a time of 2 minutes 1.81 seconds for the distance, beating by 1.6 seconds the previous best time of 2:03.41 minutes set by Australian Schipper's on July 30 of this year at the world championships in Rome.(dpa)