The top seeds hammered Xu Shilin and You Xiaodi 6-3 6-1 in the final to win their second WTA title in a row. Such has been their domination that they have not dropped a set en route to the title.
It was Sania's seventh title of the 2015 season and sixth with Hingis. She won one trophy with Bethanie-Mattek Sands in Sydney.
Sania and Hinghis have now won six of 13 events they have played since joining forces in March -- Indian Wells, Miami, Charleston, Wimbledon, the US Open and now Guangzhou. They have an incredible 42-7 win-loss record together.
They next go to Wuhan, where again they are top seeds.