I think it's ok. Cheaper than offline courses. The most expensive course 1 hour is 60, and the cheapest course 1 hour is one or two yuan. And there are several free public classes every month. Not bad.

It's too much trouble to take classes offline. Waste time on the road. Later, I chose to take classes online. It happened that the parents of my children's classmates were attending classes on 9 1 and recommended us to attend classes. The quality and service of teachers are not bad. The decimal teacher followed by the child is from Peking University. It seems that there are many teachers who graduated from Qingbei.