Xin Zheng attended the Barcelona GSE Summer School in 2016, participating in four courses on Bayesian time series methods and Bayesian methods for DSGE models from June 27th to July 8th. The certificate verifies Xin Zheng's attendance and is signed by the Academic Affairs and Career Service Manager of the Barcelona Graduate School of Economics, which was officially recognized in 2008 as a graduate school associated with the University Pompeu Fabra and Universitat Autònoma de Barcelona.