A slew of unforced errors handed her opponent the only break of the set and Barty eventually closed out the match on serve with a backhand smash. It has been a great finish (to the season) for me in China this week.
Barty, who took a break from tennis earlier in her career to play cricket, has proved nearly unbeatable when she has won the first set this year as she has solidified her position in the world top 20.
"I know that whenever I have played (Wang) in the past, it's always been an extremely tough match", said Barty. The Frenchwoman needed to win in straight sets losing no more than seven games.
Barty's week had begun with defeat to Aryna Sabalenka in the Orchid Group, but she battled back to beat Caroline Garcia and qualify for the semi-finals.
Muguruza said Wang's performance was "excellent", adding: "She was playing incredible shots and not missing anything". It was invincible when she won the first set this year.
Muguruza became the first Spanish player to move to the semifinals in the tournament, as Suárez Navarro fell in the round robin in 2015.
The injury ends another strong year for Keys, who reached the semi-finals of both the French Open and US Open, though major success still eludes her. "I'm happy with the win today".
I played solid. It was much better than yesterday. It's already a miracle for me to stand on the court.
Contesting 2018 Zhuhai at a career-high ranking of No.22 (first posted October 22, 2018), having broken Top 30 after the memorable Wuhan run, the Chinese claimed the 36th tour-level win of the season, the first she has registered 30 or more main draw victories in a single year.