The Tunnel for the Transport of Tibetan Soldiers The Tunnel of Guangu in the Border of Song and Liao Dynasties was stationed by Yang Yanzhao, the hero. For sixteen years, Zheng Shouxiong prefecture has won many battles and won many battles. Tibetan soldiers are transported through tunnels while supervisors transmit information about enemies. Liaobang Kexing Yang Liulang, Megatron frontier guard.