Professor-level, Senior Engineer, National Constructor, and Executive Deputy Director of the National Key Laboratory of Shield and Tunnelling Techniques. He is Adjunct Professor of Shijiazhuang Railway University, North China University of Water Resources and Electric Power, and Henan University of Science and Technology. He has run numerous national projects in China, and collaborated internationally. He is one of the founders of the shield industry in the country. He was awarded first prize from the National Science and Technology Progress Awards for his work in the area, and is a leader in the field. Born in 1975, Jiangka Wang, male, is master of architecture and civil engineering from Lanzhou Jiaotong University, professor-level senior engineer, national-level registered construction engineer, China Railway expert, who enjoys the special allowance of the State Council government and is Wuxi city model worker. He is now the deputy commander of the Guangzhou Rail Transit Project Command of China Railway and the project manager of Line 13 of the Guangzhou Rail Transit Project of China Railway. He is mainly engaged in shield construction and management of urban rail transit projects, and has won 5 national science and technology innovation awards, 2 provincial and ministerial science and technology innovation awards, 5 China Railway Science and Technology Innovation Awards, 1 utility model patent and 7 invention patents. He has participated in the construction of rail transit in Guangzhou, Shenzhen, Dongguan, Foshan, Shanghai, Beijing, Chengdu, Wuxi, Nanjing, Xiamen, Dalian and other cities, and has published more than 10 theses and participated in 2 national standards. He has authored academic works such as Key Technology of TBM Construction, Key Technology of Shield Construction, Design and Construction of Shield, China Shield, China Tunnel, China Bridge, China High Speed Rail, China Metro, Design and Construction of TBM, and Key Technology of Shield and Excavation. Shengjun Jiao graduated in management science and engineering from Xi'an Jiaotong University. He is registered consulting (investment) engineer, registered tenderer, member of the National Steering Committee for Surveying and Mapping Geo-Information Vocational Education, and member of the China Railway Engineering Professional Steering Committee. As president of Shaanxi Railway Institute, he has presided over the construction of the national resource bank of "underground and tunnel engineering technology" and won the second prize of the Chinese teaching achievements.