Photo taken on July 22nd shows that two trainees stay inside the camp built by themselves. Tibet's first summer youth camp has been launched at the Yangpachen Altitude Training Base in Damxung County to the northwest of Tibet's capital city Lhasa, July 21, 2013. According to the training schedule, trainees would learn outdoor camping skills from July 22, which was fresh new to most of them. The training on mountain biking and camping guaranteed the safety of young trainees to sleep out of doors. [Photo/Xinhua]