Twelve caves are located in the Yuanzhuang Garden of Gulangyu Scenic Spot in Xiamen, Fujian Province. They are connected caves built in accordance with mountains. They have twelve caves in the name of local branches. According to the order of the twelve zodiac signs, the caves are of different sizes and shapes. The paths are scattered and winding up and down. The optimum travel time is twelve holes a day and four seasons, the temperature is relatively uniform, mild and humid, with an average annual temperature of 17.6 degrees Celsius. The best time to travel is four seasons.