"Smart Vocational Education, Xue Tong (Super Star Erya) and China University mooc are different platforms developed by three different companies, and the data inside are not shared and interoperable.

Intelligent vocational education takes knowledge points/skill points as the basic granularity, takes the whole professional knowledge/skill tree as the whole structure, and realizes the systematic management of data through a series of metadata, so that each data can be easily queried and called.