The difference between yellow sand day and red sand day

Different colors. Yellow sand day and red sand day are both days when the concentration of airborne suspended particles is high and yellow sand or red sand is formed, but the colors are different. The sky on a yellow sand day is yellow or grayish yellow. On a red sand day, the sky is red or orange-red. The same is true in other aspects. Low visibility is easy to cause respiratory diseases and has little impact on travel, work and life. Pay attention to personal protection.