Introduction to wooden pillars: The Hanging Temple is about 50 meters high from the ground. According to research, in the early days of the temple's construction, the vertical height of the temple from the ground was nearly 100 meters. Due to the sedimentation of the upstream river, the ground was raised to where it is now. the height of. On the surface, the temple is supported by only a dozen wooden pillars as thick as a bowl. In fact, in the early stages of construction, workers drilled holes in the cliff and inserted 2/3 of the wooden pillars into the hard rock. , leaving 1/3 outside the cliff, so some wooden pillars are stressed, and some are just for decoration and support. In addition, the beams inserted into the rock are made of locally abundant hemlock and soaked in tung oil in advance, so they can prevent insects and corrosion.