On this Qingming Festival

Remembrance of heroes

April 3

More than 2,000 teachers and students in Guyuan, Ningxia

108 miles hiking round trip

Crossing mountains and ridges

Memorial to the 391 martyrs who were buried in Renshanhe Martyrs Cemetery

Up to 15 hours of walking

They use their steps to measure the path of faith

Leave many touching moments

(Original soundtrack, listen to the children's voices)

Reporter: Tang Zichen, Ma Sijia

Production: Yu Zhuo