I would recommend you to Dongguan Hongyuan Foreign Languages Institute, but I really can't guarantee the other quality.

You can refer to other places:

Zhuhai IBS International Business Language School, a legendary prestigious school.

Teacher Jixi in Northeast Heilongjiang gave a lecture, which was very popular.

Guangzhou cherry blossoms are good, and learning spoken English is fast and practical.

Shenzhen Hongtu Japanese Education Center has a good reputation.