Nantou: A hiker surnamed Wang was climbing the Gan Zhuo Wan Mountain with a friend when he slipped and nearly fell down the valley. His 20-kilogram backpack and glasses tumbled into the ravine. Suffering from over 600-degree myopia, he was unable to climb up or down and called for help from the fire department. It took rescuers four days to hike into the mountainous area and successfully deliver the glasses, completing a challenging "delivery" mission.