The Tianjin Open decider will be contested by Alison Riske and Peng Shuai after the pair won their respective semi-finals on Sunday.
Rain washed out play on Saturday, with Peng and Danka Kovinic locked at 3-3 in the final set of the WTA tournament.
Peng and Kovinic returned to complete their final-four contest on Sunday, with the former triumphing 3-6 7-5 6-3 in two hours, 17 minutes.
The Chinese will need to back up that victory later on Sunday following Riske's shock 6-4 5-7 6-4 win over second seed Svetlana Kuznetsova.
American Riske and Kuznetsova did not have an opportunity to take to the court due to the weather on Saturday but when they did, there was a surprise victor.