Prof. Yongge Wei from Tsinghua University visited our group Date:Nov 29, 2019 Read times: Dr. Yongge Wei, visited our group and college of chemistry on Nov. 20, 2019, and gave us a wonderful lecture entitled with Chemistry and application of polyacid imine derivatives. PreNews: Prof. Takashi Ooi from Nagoya University visited our group NextNews: Prof. Carsten Bolm from RWTH Aachen University visited our group