Introduction to the story and legend: Legend has it that the bridge was built by Lu Ban. After it was repaired, the Jade Emperor sent Chai Wangye Zhang Guolao to carry Wuyue Mountain to test it. When he walked to the middle of the bridge, the bridge began to shake. Lu Ban jumped into the river and held it up with one hand. Bridge body. A deep palm print was left behind. Zhang Guolao's donkey stepped on a hoof mark. Lord Chai’s wheelbarrow ran over a ditch, and these marks are still clearly visible!