At an altitude of 5231 meters of mount tunggula of qinghai-tibet plateau, there is a group of pay and dedication for the qinghai-tibet highway, they maintained that the days in life, to ensure that the cargo and the safety of pedestrians, they are the department of transportation awarded the title of "world class", alpine hypoxia sun under the test of bad environment, such as they are in an optimistic spirit to maintain the road of the life, I use the camera recorded the group of lovely and respectable person, I just hope they can be more and more people attention and memory. -----This video is subject to the 2016 Canada Golden Maple film festival screening and selection. Any reproduction or republication of this video is expressly prohibited.