May 8 marks the World Smile Day. Hey! Your smile looks so great and contagious. Let's put a smile on our faces and bring warmth to each other!
Students lie on the playground in a circle and demonstrate smiley cards to greet the World Smile Day (Photo/ Zhao Ming)
Medical workers demonstrate smiley cards to greet the World Smile Day (Photo/Liu Qinli)
Medical workers take photos with a smile. (Photo/Liu Qinli)
Expressway toll collectors take daily smiling exercise. (Photo/Cheng Zhao)
Web editor: Chen Liang