Including qualifying rounds, the Puerto Rican has now won 14 of her last 17 matches.
"I didn't expect this level from me", said Sabalenka afterward, per the WTA. "Honestly, on the match points that I had, I thought she played really aggressive".
Aryna Sabalenka reached the final of the Dongfeng Motor Wuhan Open following a straight set win on Friday.
John Millman will wait to see if there is one more withdrawal from next week's ATP Tokyo main draw for him to make it before he commits to a flight from Brisbane.
Wang took advantage of her opponent's unforced errors to win the first set 6-3 and took control of the second early on, as Puig appeared to lose focus, becoming frustrated by her frequent unforced errors.
Sabalenka, who earned her maiden WTA title at this summer's Connecticut Open, faces Estonia's Anett Kontaveit in the final.
Wang was in tears as her serve was broken for the second time in the second set, and soon called a halt to the proceedings with her hopes of adding the Wuhan title to the ones she has already secured at Nanchung and Guangzhou ended.
Qiang Wang beat Monica Puig 6-3 6-1 in the the other completed quarter-final.
"It's been an exciting week, and I was lucky to get out of that match", Barty said on court after the match. On Wednesday it was the turn of Puig to send more shock waves through the field of the Wuhan Open as she knocked-out the world number two, Wozniacki. The Estonian advanced with a 6-4 4-6 6-1 win over Zhang Shuai.
Two-time grand slam victor Garbine Muguruza crashed to a 7-6 (7/3) 7-6 (7/1) loss at the hands of world number 47 Katerina Siniakova. Sablenka goes on to face Dominica Cibulkova, who beat Daria Kasatkina 6-3, 7-6 (3).