[1] Ningbo Univ Finance & Econ, Coll Int Econ & Trade, Ningbo 315175, Peoples R China
[2] Ningbo Philosophy & Social Sci Key Res Base Res Ba, Ningbo 315175, Peoples R China
[3] Tsinghua Univ, PBC Sch Finance, Beijing 10623, Peoples R China
[4] Tsinghua Univ, PBC Sch Finance, Beijing 100083, Peoples R China
[5] Hong Kong Univ Sci & Technol Guangzhou, Guangzhou 511453, Peoples R China