Nevertheless, this problem can be tackled by the authority having strict laws towards industrial activities in enterprises.More specifically, the state can set a limit in the extraction of greenland and besides, frequently examine the wastewater treatment in factories. For this reason, if there were any shortcomings in radically treating sewage before releasing it into the environment coupled with the overuse of exploting green spaces, those must receive a monetary fine and a ban from continuing to go in work for a time period. Vietnamese authority is a revelant example, which without informing, found some factories skipping the waste purification, afterwards, forces it to totally be closed down three years later and compensate for nearly five hundred millions vietnam dong for once violation.