China Communications Construction Company Limited (CCCC) is a leading global comprehensive service provider of ultra-large infrastructure. It is the world's largest port design and construction company, as well as its largest highway and bridge design and building company, largest dredging company, largest container crane manufacturing company and largest offshore oil drilling platform design company.

Serigne Assane Fall, a student from Senegal who majors in Civil Engineering at the University of Science and Technology Beijing, participated in the construction of the Line 13 of Beijing Subway, a project of CCCC, this summer.

"Before I came to China, I saw many Chinese companies working on many projects in my country, so I became very interested in China's civil engineering," he said, and noted that the main focus of his internship was studying the maintenance structures of diaphragm walls.