Dr. Hanhua Zhu is the Chief Engineer of Highway Bureau of Zhejiang Province, China. He got his Ph.D. degree at Central South University, China, under the supervision of Prof. Qingyuan Zeng, Academician of the Chinese Academy of Engineering. After working on tunnelling projects as a field engineer for more than 10 years, he started his administrative career in 2001 in Highway Bureau of Zhejiang Province. His working area includes soft soil ground treatment, slope stability control, and underground construction techniques, etc. Dr. Zhu won the Second Prize for Science & Technology Achievement of Zhejiang Province, twice as Principal Investigator. Dr. Zhu has accumulated a wealth of experiences about underground excavations as practitioners and administrators. He has co-authored 7 books in Chinese and 3 books in English on the subject.

Lei Shi is the Chief Engineer of Tibet Lingzhicao Construction Consulting Group Co., Ltd., China. His working area includes foundation treatment, underground stability analysis, slope design and treatment, and deep underground excavation, etc.