Introduction to Hundred Days Red: It is behind the Main Hall of Lingshan Temple and there is an ancient tree to the south of the front yard of the Mercy Hall. People also call it the "itchy tree". If you gently scratch the tree with your hands, the branches and leaves will tremble slightly. The trunk is about 30 centimeters in diameter and about 5 meters high. The bark is yellowish brown in color. The tree trunk grows upward in a curved manner, just like a dragon swimming in the water. The branches are staggered and intertwined, and the lush green leaves overlap each other to form an umbrella shape. The "umbrella" area is about 5 square meters.