When the technician entered the room, he asked the guests politely. When a technician enters a room, he usually greets the guest politely and confirms whether he can enter the room to work. Technicians can say, "Hello, I'm your technician. Can I come into the room? " The guest said he didn't want technicians to enter the room. Technicians can respect the wishes of the guests and change to another room to work, and apologize at the same time: "I'm very sorry, if you don't want me to enter the room, I can change to another room to serve you." Please tell me your opinions and needs, and I will try my best to help. " Technician refers to a person who has professional knowledge and skills in a specific field and is engaged in related technical work.