I suggest you go to Shenzhen Chinese Snack Training Center to study. It's delicious, the teacher is patient, there are many people studying, and long-distance accommodation can be provided free of charge. Very convenient. Address:

Block B 14 16, Central Plaza Building, Buji Street, Longgang District, Shenzhen! (Above Xinyijia \ Next to Agricultural Bank \ Above Tiantianmeiyu Capital)