Introduction to the ancient plank road: The ancient plank road halfway up the mountain is about 300 meters long. It is semi-naturally weathered and semi-artificially opened. The year when the plank road was first built is unknown, but the degree of weathering proves its antiquity. On one side is a rock wall, on the other side is a cliff of thousands of feet, which is thrilling and chilling. However, there are steep valleys and secluded ravines at the foot, lush forests and bamboos, cascading peaks and beautiful mountains and rivers in the distance, and there is a unique scenery.