Follow our live coverage of day six of the Tokyo Olympics hereChina shocked the United States and Australia to take gold in the womens 4x200m freestyle relay final at the Tokyo Aquatics Centre on Thursday.The Chinese quartet of Yang Junxuan, Tang Muhan, Zhang Yufei and Li Bingjie touched the wall in a world -record time of 7:40.33 seconds to push the US into silver, despite their four clocking an American record. Australi
