China's last two representatives, Zhang Shuai and Wang Yafan, were eliminated from the tournament on Wednesday.
Zhang Shuai lost to Russia's Anna Kalinskaya in straight sets, 6-1, 6-1, while Wang Yafan was defeated by Swiss No 1 Belinda Bencic, 6-2, 6-2.
"I felt good on the court," Bencic said. "I tried to play aggressively, tried to play my game, and it worked out well.
Bencic's victory marks her sixth win in a row, continuing her climb into the world top 10 after being ranked "913 or something" a year ago.
Author's summary: Bencic progresses in Hong Kong Tennis Open.