Instead of using building materials such as nails, the bridges were built using the mortise and tenon joint process, a concavo-convex connection method used to combine two pieces of wood.
The wood material, a kind of renewable natural resource, keeps long-term flexibility at minus 40 degrees Celsius to 50 degrees Celsius and cannot be ignited by an open flame up to 400 to 500 degrees Celsius.
The old man worked to cut down trees when he was young. But now he is dedicated to preventing humans from harming the woods.
The masterpiece depicts 300 people with individual expressions and postures going about their bustling daily lives.
Photo taken on Nov. 13, 2019 shows a wood sculpture during an exhibition at the Sanyi Wood Sculpture Museum in Miaoli County, southeast China's Taiwan. About 70 wood sculptures are displayed during the exhibition.