The 19-year-old Zheng, who knocked out prime seed Paula Badosa earlier this week in Tokyo to underline her wealthy potential, faces Russia’s Liudmila Samsonova within the remaining.
The unseeded Zheng was ranked exterior the highest 150 this time final yr however she has since risen to 36 and made the world sit up and take discover with a string of spectacular performances.
She mentioned she felt “so unimaginable” after ending off Russia’s fourth-seeded Kudermetova in 3hr, 2min and set her sights on making a quick begin in opposition to Samsonova within the remaining.
“To be aggressive is all the time my first goal,” mentioned Zheng, who took a set off world primary Iga Swiatek within the final 16 at this yr’s French Open.
“When I’ve an opportunity, I’ve to step ahead and attempt to be extra aggressive as a result of from the few losses I had the final time, that is my weakest half.”
Zheng threw away a number one place to lose the primary set however fought again to take the match all the best way to the wire.
She was compelled to attend whereas Kudermetova took a medical timeout with a tiebreaker looming within the third set however Zheng held her nerve to assert the win.
“In that second it would not actually matter as a result of I do know what I’ve to do, all the time,” she mentioned.
“I can’t management what my opponent is doing. What I can do is to concentrate on me and use my subsequent service sport.”
In-form Samsonova, who can be unseeded, surged into the ultimate with a 7-6 (7/4), 6-2 victory over China’s Zhang Shuai.
The 23-year-old Samsonova has received the title at two of her final three tournaments and he or she was once more medical as she dismantled Zhang in 90 minutes.
Samsonova knocked out Wimbledon champion Elena Rybakina earlier this week in Tokyo and defeated two-time Grand Slam winner Garbine Muguruza within the quarter-finals.
Samsonova received titles in Washington and Cleveland in August earlier than dropping to Australia’s Ajla Tomljanovic within the final 16 of the US Open.
“I am attempting to all the time have huge motivation — I converse with my group to strive each time to perform a little bit higher and just a little bit extra on one thing,” she mentioned.