On March 20, China Railway Guangzhou Engineering Group completed the first pouring of the lower beam of Tianmen Bridge on the Anshun-Panzhou (boundary between Guizhou and Yunnan) Expressway. This time, the beam under the central tower of Panzhou Bank in Guizhou was poured twice, with a total concrete volume of 1166.67 cubic meters. The first pouring height is 3.5 meters, and the pouring volume is 585 cubic meters.