It's just that the ownership of coal mines has changed. Coal mining groups generally operate in a joint-stock system. That is to say, in the past, your coal mine assets belonged to your boss (usually the coal mine owner), but now your coal mine assets are held by multiple entities, which may include the original mine owner and the group to which the coal mine belongs, usually the group holding company, which has the right to manage the coal mine, dispatch personnel and deal with various problems in operation. Other shareholders only have the right to share out dividends. For ordinary employees, there is not much impact. If the group wants to completely adjust the technology, management and personnel of the coal mine, it may dismiss the original employees.
If that's the case, there's nothing we can do.
Are you from Shanxi? What's your company name now?