*Corresponding author: Shu Keng. For helpful comments, we thank the coeditors and the anonymous reviewers of The China Journal, as well as Xueguang Zhou, Pierre Landry, Yuzhao Liu, Xiang Gao, Chuanhao Tian, Jianyong Zhou, and Wei Chen. We are also grateful for support from China’s National Social Science Foundation (grant 16CGL057), the Self-Determined Research Funds of the Central China Normal University, and Universities’ Basic Research and Operation Funding from China’s Ministry of Education (funding number CCNU14Z02008).