#西藏自治区成立60周年##跨越时光的高原#【高原如何亮起一盏灯：巴桑次仁】海拔5000多米，零下42度的生命禁区，如何建起一座铁塔？巴桑，用25年的时间，见证全球海拔最高电力天路的从无到有，守护一盏酥油灯摇曳的微光中变幻出的城市霓虹。How was an iron pylon built at 5,000 meters above sea level in minus 42 degrees Celsius? About 25 years ago, Pasang Tsering witnessed the creation of the world's highest "electricity sky road," guarding the flickering gleam of a butter lamp as it transformed into neon lights. http://t.cn/A6sCFKl6