Taking the Ching dynasty Patungkuan Trail as an example, even though it was the most important route across the mountains in Ching times, its builder, commander Wu Kuang-liang, left no account of its construction, and it was built so long ago that few other records remain.
以清朝八通關古道為例，由於時日已久，這條清朝最重要的中路，開路的總兵吳光亮甚至連開山日記都未記錄。