On July 2 1, Academician Li Jijun of Lanzhou University passed away. He is not only a teacher, but also an expert in geography and an academician of China Academy of Sciences. His departure means that students have lost an excellent teacher, geography has lost an authority, and the country has lost the pillar of a country.

First, the teaching effect is remarkable. Academician Li is a professor at the College of Resources and Environment of Lanzhou University, and is praised by his classmates. Mr. Big? He is deeply respected and loved by students, not only because of his excellent professional ability, but also because of his approachable personality. It is worth mentioning that three of the students led by Academician Li have successively become academicians of the Chinese Academy of Sciences, and this story is widely circulated in academic circles. During his teaching in school, he was also rated as an advanced scientific and technological worker in colleges and universities nationwide. The death of such an excellent teacher is undoubtedly the lack of a mentor to train talents for the country.

Second, it left a star for the geographical community. Academician Li Jijun used to be the vice chairman of the Chinese Geographical Society and the vice chairman of the Geography Teaching Steering Committee of the Ministry of Education. He also put forward the theory of Qinghai-Tibet Plateau and the systematic theory of Qinghai-Tibet Plateau uplift. In addition, he also edited and published monographs such as Tibet Glacier and Hengduan Mountain Glacier, and won the second China Excellent Achievement Award in Geographical Sciences. Academician Li's contribution to geography is self-evident.

Third, the country has lost the pillar of a country. Academician Li Jijun is a famous geomorphologist and glaciologist in China, and pays special attention to field investigation. For example, the Tibetan Glacier mentioned earlier is a book published by Academician Li after his inspection there. In addition to geography, Academician Li has also made outstanding contributions in many fields such as climate and environmental change.

Generally speaking, the death of Academician Li will have a great impact on the school, geography and the country. It takes a lot of time and energy to train an academician. How long does it take for a diligent academician like Li Jijun to appear?