China's Jiang Xinyu and Chinese Taipei's Wu Fang-Hsien reached the semifinals of the women's doubles at the Miami Open on Wednesday with a 6-3, 6-4
Jiang and Wu served four aces and converted four of five break points to prevail in an hour and 20 minutes.
Wang and Zheng won 70 percent of their first-serve points but were let down by a series of unforced errors at crucial moments.
Jiang and Wu will meet Mirra Andreeva and Diana Shnaider on Saturday with a place in the final at stake.
The Russian pair progressed by overcoming Ekaterina Alexandrova of Russia and Peyton Stearns of the United States 5-7, 6-3, 10-4 in their quarterfinal.