With the warming of international and domestic infrastructure construction this year, the 5th Research Department of Design Institute has more and more technical liaison orders. In order to design technical schemes as soon as possible, the staff of the 5th Research Department works overtime and even quits holidays on Dragon Boat Festival. After consultation of much data, much communication, careful computation, and repeated discussion, one after another technical scheme is completed. By the beginning of June, the 5th Research Department has provided over 100 technical schemes in connection with Bailey bridges, CB450 steel bridge, steel plate girder bridges and truss bridges to the Sales Company and the Overseas Engineering Department.