The purpose of the visit is not clear, which is a matter of study plan. According to your situation, you should focus on revising your study plan.

As for the copy of your passport written on the list of materials, it is unacceptable. You need to submit the original passport.

Under 18, the guardian's certificate and notarization are required.

It is also necessary to "the original personal income tax return of father and mother in the last 12 months issued by the local tax authorities, including the taxpayer's name and the amount paid in his name."

In short, the visa was refused once, so we must prepare carefully this time.