On November 24, the International Students Department invited Professor Li Xin, Vice Dean of the School of Statistics and Doctoral Supervisor of Beijing Normal University, to give a special lecture to international students of the class of 2020-2022. The lecture was focused on the theme of "Increasing Certainty in an Uncertain World: Economic Growth in Production Sharing Activities", which helped students understand the latest international economic situation and outlook, as well as discuss how developing countries can achieve sustainable growth in a multi-level world in the era of global value chains.