When returning to public transportation, choose to sit apart or spread out as much as possible. The World Health Organization recommends avoiding close contact with others and keeping a distance of at least 1 meter between you and others. If a nearby passenger has symptoms such as coughing, sneezing, or fever, it is recommended to keep an appropriate distance from him or her, and you can ask the attendant for help to change seats. In addition, consider choosing a seat in front of you. Because the back three rows of planes, trains, and passenger cars are currently mostly designated as emergency areas for the purpose of isolating suspected or confirmed patients in the event of a case, it may be helpful to stay away from these risky areas.