Chinese authorities have arbitrarily detained a popular Tibetan activist known for his tireless campaign to promote good governance, anti-corruption and social accountability in his hometown of Kyangche (Ch: Jiangqian) Township, Gade (Ch: Gande) County, Golok (Ch: Guoluo) Tibetan Autonomous Prefecture (TAP), Qinghai Province, in the Tibetan province of Amdo. Mr A-nya Sengdra, 47, was beaten up and detained on 4…