Why are there more supervisors recruited online than builders?

The supervisor's salary is higher. Although the nominal salary is low and the work is easy, he has some gray income and is more car-scrapping.

The builder's salary is relatively low, the salary is higher than that of the supervisor, and he is too busy, but the total income is not higher than that of the supervisor. There are too many builders, and the requirements of supervisors are higher than those of builders, so there is no shortage of builders in the talent network. I hope I can help you.