Chinese online learning platform 17zuoye has raised $100 million in Series D funding as online education is booming in China, valuing the company at $600 million.

The round was led by H Capital, and other investors included Temasek, Yuri Milner/DST, and Lei Jun’s Shunwei.

17zuoye said that its latest cash injection will go towards setting up more third-party collaborations, in addition to improving and optimizing its existing services.

On February 21, 2014, 17zuoye.com raised $20 million in Series C round of financing from U.S. hedge fund sponsor and Russian internet company DST.