Tennisline are doing 5-day camps by trained professional coaches for kids age 3-12. They are one of the leading tennis academies in the city with multiple professional certifications (ITF, PTR, iTPA), so if your kid can't get enough of rackets and balls, this one could be for you. There will be two camps this summer, the first goes from July 5-9, and the second goes from July 12-16. Both camps are from 9-11am. It's 2,400rmb for one camp, or 4,600rmb for both.