Hello, I am a native Chinese live in China, as a parent of 5 years old boy, I am interesting with this project.
For the online school marketing, in my opinon the best way in China is via social media like Wechat or Weibo, it is more efficent and useful. But I try many times it seems we can not visit your homepage in Chinese Mainland.
So the first step is to update the homepage in your side or build a new one in Chinese Mainland.
Second create the offcial account in Wechat and Weibo to introduce the online school, and collect the members
Third, I think you already have the app for andriod and IOS, can help potential customer to have a try.
And below is currently backgroud in China for online English school.(for you information to think the next step actions)
1) As end of today there almost 27 Engilsh onine training school in China Mainland
2)Customers will focus on
Teacher(North American Teachers are more popular, more than 73.6%parents prefer North American teacher),
Teaching material(Wonders,Reach,Oxford,Side by Side),
Teaching methods(1V1,1V3,small Class)
Price(tens to hundreds)
3) I list Top 4 online school for your reference:
->VIPKID focus on 4-12years 100% North America Teacher
->DaDa Engilsh focus on 4-16years >50% North America Teacher
->VIPJr focus on 5-18 years 70% North America Teacher
->51talk focus on 4-15years 20% North America Teacher
Above is my proposal, I hope can help you in the short-term also long-term plan.