Mianyue Line is a hike along an abandoned railway in Chiayi County, Taiwan. To access this stunning trail, hikers must apply for a permit through the Forestry and Nature Conservation Agency's website. The process is pretty straightforward - just select your date, fill out some basic info, and wait for approval. Once approved, download and print your permit to post in the designated box along the trail on the day of your hike. Easy peasy!