Gong Haiyan, the Chinese serial entrepreneur who founded the US-listed online dating service Jiayuan, launched today her third online education project, a live course site Nahao.com. There have been several live course sites in China. Tizi offers educational materials and recorded courses, while Nahao is a platform for teachers to give live courses online and interact with students, according to the company. Also there are features helping students do homework or participate in other after-school programs online. The courses on the site are priced lowered than prices for offline courses (those offline courses are really expensive though).