In order to promote the development on the engineering in China, supported by the China Graphics Society, the Fifth National BIM Academic Conference and The Sixth Specialty Committee Annual Conference were held by the BIM Specialty Committee of China Graphic Society from November 16th to 17th, 2019. This conference was organized by CMIG Drawin Technology Group Limited, co-sponorsed by BIM Joint Research Centre of Tsinghua University (School of Civil and Hydraulic Engineering) and Glodon Software Company Limited and Prefabricated Construction Committee of Changsha City Real estate industry Association. Over 500 people including students and teachers in multiple provinces and cities, as well as leaders, chief engineers, and BIM technicians from construction companies attended the conference. As the secretary-general of the BIM Special Committee, I hosted the opening ceremony and keynote speeches in the first morning.