7 to 8 years old
adult
air pollution
anti influenza mask
asian
boys
care
casual wear
children
chinese
cold
cold virus
color picture
control
disease prevention
education
environment
epidemic
family
happiness
health care
health care and medical care
healthy
healthy lifestyle
horizontal frame
infectious diseases
influenza virus
joy
lovely
mask
no camera
onechild family
oriental
people
plague
primary school students
protection
responsibility
risk
schoolage children
sick
side view
son
students
studio shooting
surgical mask
three quarters of the body length
two people