Top seeds Mirza and Hingis got the better of China's Chen Liang and Shuai Peng 6-2 6-3 in less than an hour to enter the last-four stage and remain on course for a second successive title this year.
With today's win, Mirza and Hingis won their 28th consecutive match to equal the record set by Puerto Rican Gigi Fernandez and Belarus' Natasha Zvereva in 1994.
In a totally lop-sided contest today, Mirza and Hingis broke their rivals twice and saved one on their own serve to pocket the opening set with ease.
Liang and Peng's weak serve ensured that the second set followed a similar course. The Indo-Swiss combine frittered away seven chances but converted two, which was enough to give them the set and the match without breaking much sweat.