Introduction to the Big Dipper Tank: There are seven water tanks in front of Zhenhai Tower. Each tank is 70 to 80 centimeters high. There is a lotus seat at the bottom, and the tanks contain water. In ancient Fuzhou, there were many wooden houses, and fires often occurred. Therefore, the water tanks are arranged in the shape of the Big Dipper and are called the Big Dipper Tank. The bucket ladle is filled with water, which is intended to subdue fire. This means that the city of Fuzhou is peaceful and auspicious.