Common problems in starting work during the epidemic in COVID-19: wear masks all the time, and wear masks in public places all the time, so you won't feel inconvenient if you don't take chances with your heart. When passing through public transport facilities, you are not allowed to take off your protective mask at will.
Keep a distance from people, no matter where you are, you should keep a certain distance from people, preferably 1 meter, especially in public places, and keep a good distance from passers-by. That can try to prevent other people's droplets from splashing on you or floating to your side, and minimize the risk of infection.
If you want to change clothes when you go home or go back to the office, the first thing to do when you enter the door is to change clothes and pants at once. If there is a premise, the door frame can be sterilized. In addition, if the workplace has standards, I suggest you also need to change clothes and pants.