Attention! Please pay attention! Such people may be liars. If they are not real company employees, it is very dangerous for you to open the door so rashly. Before opening the door, please ask them if they have relevant documents. If they don't, call friends near home (male, preferably boyfriend, of course, if you are male, take something out casually). It's safer this way Please think twice before you act, even if you have relevant procedures. I hope I can help you.