Historical records show that in old Tibet, the average life span was 36 years, and the growth of the Tibetan population stagnated for a long time.
Historical records show that in old Tibet, the average life span was 36 years, and the growth of the Tibetan population stagnated for a long time.
根据历史资料记载，旧西藏人均寿命只有36岁，人口增长长期处于停滞状态。