Halep won 6-4, 6-2 to set up match against Petra Kvitova, who beat Johanna Konta 6-3, 6-4.
Britain's surprise US Open success Johanna Konta insists she is feeling no extra pressure as she looks to upset the odds again by beating Petra Kvitova in the last 16.
Kvitova won 6-1, 6-2 to set up final vs. Dominika Cibulkova, who beat Svetlana Kuznetsova.
British No 1 Johanna Konta missed the chance to close in on a place in the WTA Tour finals and the top 10 of the world after being knocked out of the Wuhan Open by Petra Kvitova.
Fourth-seeded Simona Halep of Romania advanced to the semifinals of the Wuhan Open on Thursday with a 6-4, 6-2 win over Madison Keys of the United States