Wages in Seoul are relatively higher, especially in Jiangnan. Larger schools can pay 2 million yuan a month, or even more. (Exchange rate: 1: 12) However, there are fewer water sources in other places, such as Anshan, which is around 8-1 a month. Generally, classes are held for five days and rest on Saturday and Sunday.
But it's the first time I've heard that an intermediary was introduced to be a school teacher. As for the truth, you have to ask more yourself and inquire about it.