From May to September 2019, a number of scientists from the NIGPAS went to Tibet and Pakistan to carry out the second comprehensive scientific investigation of the Tibetan Plateau and research on the "Deep Time Tethys Biological and Environmental Evolution" topic. The field surgical examination of NIGPAS was divided into three teams, with Researcher Zhang Yichun, Researcher Li Jianguo, and Associate Researcher Xi Wenkun as the heads of the research team, respectively. The Pakistan field surgery examination was co-ordinated by Researcher Zhu Maoyan.