I have learned about American English in Guo Yi before, because their family is famous in Nanjing, and the foreign teachers are all selected by English-speaking countries, so the class atmosphere is good. At the same time, it's really good to have a tutor to feedback the children's learning progress in time. Perhaps there are fewer advertisements in Guo Yi, which are relatively low-key, but in terms of courseware and children's oral English, it is better than many other English training institutions.