Han Jichang and his party, accompanied by Academician An Zhisheng and other leaders of the Institute of Earth Environment, visited the Xi'an Accelerator Mass Spectrometry Center of the Institute of Earth Environment、China Mainland Environmental Drilling Core Library、Sino-Swiss Tree Ring Research Center、Tropical Climate Laboratory、Stable Isotope Biogeochemistry Laboratory and Key Laboratory of Aerosol Chemistry and Physics，Listened to the detailed introduction of the laboratory’s R&D content and scientific research results by the relevant person in charge。

After the visit，Han Jichang gave an academic report titled "The Establishment and Development of the Land Engineering Discipline" for the leaders and researchers of the Institute of Earth dafabet mobile loginEnvironment and Environment.。Attendees expressed that they have a deeper understanding of the land engineering discipline，Great profits。Expressed by Academician An Zhisheng and other leaders of relevant local environmental protection institutes，The Institute of Earth Environment and Land Construction Group should strengthen mutual cooperation and exchanges in scientific research，Both parties can jointly develop from scientific research projects、Carry out various forms of cooperation in joint construction of laboratories and joint training of talents。