This is the overlord clause. What your company means is that if you can do it for three years, you won't ask for 2W. If you don't do enough, you will certainly ask for it. In other words, your company is based on the interests of the company, and you can't leave after a few days of training. In that case, the company will also lose money, and of course this is also a treaty that the company does not want brain drain. If you plan to work in that company, I don't think it's necessary to care so much.