North sacred tree - the tree Kai Dian in tile west of the south 100 meters king, there is an old tree, the tree is named Kai. About 450 years old, tree 15 m high, trunk 3 m into seven diamond, diameter 1.8 m; crown was "cauliflower" shape, vertical shading 450 square meters. Leaves before and after the first year flowering Guyu, distance, such as "Red Mushroom", after the spit leaves turning green, pinnate green green, drought water logging, a hundred insects do not invade, to flourish, the North is a rare species, the W Zhen a natural landscape. Kai tree, also known as berberine tree trunks sparse and unyielding, upright and straight, are ancient symbols of respect for teachers. According to legend, after his death, his disciple Zi Gong in the tomb next to the "Jie Lu," keep the tomb of six years, from defending the move again to the Kai wood seedlings planted in the grave. Later, people often Kai collectively known as wood and wood-mode model, used to call those moral, popular, can be described Biao's role models.