The "No. 0" locomotive has a history of more than 100 years and is the oldest existing locomotive in China. Because there is a big "0" on its fuselage, people call it " No. 0" locomotive. No. 0 locomotive has been used on the Tangxu Railway since 1882. It was manufactured by a British factory and has two moving axles. The axle arrangement is 0-2-0, and the diameter of the moving wheel is 812.8 mm. Among the earliest steam locomotives on Chinese railways, No. 0 is one of the two surviving ones. At present, people have different understandings of No. 0 locomotive. "History of Railway Development in China" (edited by Jin Shixuan) states that after the Tangxu Railway was opened to traffic, "in 1882, two small 0-2-0 type (only two pairs of moving wheels) locomotives (called No. 0) were purchased from the United Kingdom. , participated in the operation. "However, the British Jinda said: "In October 1882, two water tank engines were purchased from the Stephenson Locomotive Factory in Newcastle and equipped with 10.5×18-inch cylinders and six 42-inch cylinders. "Double wheels." One is the 0-2-0 type (0-2-0 is the axis type, if it is expressed in wheel type, it is 0-4-0), and the other is the 0-3-0 type. Jinda was the An engineer on the Tangxu Railway, his account seems to be more reliable. In the current Tangshan area, the hometown of the Tangxu Railway, a considerable number of books and periodicals believe that the No. 0 locomotive was the first locomotive manufactured in China in 1881. The reason why it is marked as 0 is to mean that it was created from scratch, "zero" breakthrough". This statement is not recognized by experts and scholars, because although the No. 0 locomotive is simple, its components are well-made and the equipment is fully equipped. At that time, when China did not have electric welding and gas cutting, it needed boilers for mines and old trough iron. It's almost impossible to make it look like this. In 2003, Peter Clash, a British friend who loves China's railway history, believed after research that "Locomotive 0-4-0, or Locomotive No. 0, was not the first locomotive imported by China. Locomotive No. 0 was probably the A ballast locomotive was purchased after the further construction of the Kaiping Railway in 1888. "In any case, No. 0 locomotive is a precious cultural relic of our country. In 1985, it was sent across the ocean and was sent to Japan at the World Expo. display.