Sina open class（ open.sina.com .cn)

Website name: Sina open class

Domain name: http://open.sina.com.cn/

Ranking: 7936th

Alexa ranking: 16th

Score: 2943

Website type: education culture, online education, education examination

Region: Beijing, Haidian

Website introduction: Sina open course brings together video courses of famous professors from Harvard, Yale, Stanford, Massachusetts and other famous universities all over the world, involving humanities, history, economics, philosophy, science and technology and other disciplines, creating a sharing platform of online video teaching without borders.