Photo shows youth representatives signing their names on the vow wall on May 4 the Youth Day. [Photo/ Bayi District]

On the morning of May 4, the Youth Day, Bayi District of Nyingchi City, southwest China's Tibet Autonomous Region held a photo exhibition as well as a signature activity to mark the centenary of the May Fourth Movement. Youth representatives from all walks of life and Young Pioneers totaling 200 people participated in the signature activity.

Photo shows a mother telling stories to her children in the parent-child reading area of a library during the May Day holiday. [China Tibet News/Li Zhou]

During the May Day holiday, two workers from Gansu Provice are building the roadbed at a construction site of road hardening project in the main urban area of Xigaze City, southwest China's Tibet Autonomous Region. [China Tibet News/Zhang Bin]