The Sydney-born British number three reached the quarter-finals in Guangzhou last week, beating former world number 14 Shuai Peng along the way.
And she was too strong for Poland's Katarzyna Piter in Ningbo, winning 6-1 6-1 in just 65 minutes.
Next up for the 22-year-old is a clash with Sweden's Johanna Larsson, who beat third seed Lourdes Dominguez Lino.
Zheng Jie also crashed out on Tuesday.
Home favourite and second seed Zheng was thrashed by Chinese countrywoman Zhang Shuai 6-1 6-1, while Spain's Dominguez Lino, seeded third, was beaten in straight sets, 6-0 7-6 (7/2).
Fourth seed Yvonne Meusburger of Austria avoided an upset by beating the Czech Republic's Petra Cetkovska 6-2 6-1, while there were also wins for Anabel Medina Garrigues and Anna Schmiedlova.