On the morning of December 21, 2016, Assistant Professor Tu Yundong, Business Statistics and Econometrics, Guanghua School of Management, Peking University, paid an academic visit to our school, exchanged with Professor Zhang Lingxiang, and gave a report entitled Adaptive Estimation of Functional-coefficient Cointegration Models with Nonstationary Volatility. The report was hosted by Prof. Zhang Lingxiang. More than 10 doctoral students and postgraduates as well as teacher Cao Yunfei from the Department of Applied Economics participated in the report.