Dali ~ Lijiang Expressway is a section of the Hangzhou ~ Ruili Highway for the planned national expressway network transversal 12 in Yunnan. With the total construction mileage of 259km, it is an important part of the trunk national highway connecting the southwest and northwest of China, the main way out of Yunnan and into Sichuan and Tibet as well as the first expressway extending to the Tibetan area in China. The construction mileage of the Contract Section 21 undertaken by the Company is K136+800 ~ K139+650, with the total length of 6.96km, of which the main line is 2.819km long and the connection line is 4.141km long. The whole construction section is located in the deep soft base section in the flatland area of Jianchuan County, Dali Prefecture. With high workload for soft base treatment, it is also the test section for the soft foundation treatment research project jointly implemented by the department and province. The project was commenced in June 2010.