The Second National BIM Academic Conference, hosted by the BIM Specialty Committee of China Graphic Society ("BIM Special Committee" for short) and organized by Guangzhou Metro Group and Construction Supervision Company of Guangzhou Metro, was held in Guangzhou Baiyun International Conference Center. Totally 700 people including teachers and students from colleges and universities in multiple national provinces and cities, as well as leaders, chief engineers, and BIM technicians from construction companies and rail transit industry attended the conference. The two-day conference had four sections, including keynote talks, presentations, the special section for rail transit, and three stations on the southern extension of Guangzhou Metro Line 4. As one of the organizers and the general secretary of the BIM Special Committee, I hosted the opening ceremony and keynote sections on the morning of the 12th.