What does yellow code 3 in Luohe mean?

Excuse me, do you want to ask what the yellow code of Luohe means? The Yellow River Code points out that screening, nucleic acid detection, family medical observation or health monitoring are needed. Henan health code bonus, yellow and green. Red team said that it is necessary to conduct medical observation and isolation in designated medical institutions or isolation points, and it is necessary for local epidemic prevention and control institutions to strictly manage them; The yellow code indicates the need for screening, nucleic acid detection, family medical observation or health monitoring; The green code indicates that there is no abnormality and it can pass normally.