Normally, you apply for a course at a university and they will arrange a student (X visa) for you. Just make sure that the university is able to do this. Universities such as Jiao Tong, or Tong Ji or East China Normal are good options.

The universities you've mentioned is it in Pudong? can you send me exact address,if you don't mind...Looking forwrd to it..thanks

Shanghai Jiao Tong University has five campuses, Tongji University
has 4 campuses, East China Normal University has two campuses. For the accurated address of these campuses , you can find in the list of Shanghai Universities(https://www.travelchinaguide.com/cityguides/shanghai/university.htm) .