Recently, with the increasingly penetration of internet application, the training industry is rapidly developing from off-line to on-line, so the on-line offers some kind of service which is diversified and individualized; meantime, some problems also appeared, such as: educational resources do not distribute balanced which is not shared in time, etc.,.

The Cloud products, with the various kinds of share function, such as electronic white board,

shared screen, to contact with zero distance, etc., not only massively made the contact cost of two parties saved, but also the result has advanced.