1. School of Labor Economics, Capital Univ. of Economics and Business, Beijing 100070, China.
2. Dept. of Advertising, Capital Univ. of Economics and Business, Beijing 100070, China (corresponding author). ORCID: .
3. Dept. of Modern and Classical Languages, Univ. of Houston, 612 Agnes Arnold Hall, 3553 Cullen Blvd., Houston, TX 77204-3006.