“…The computation package of lasso in STATA is available at http://fmwww.bc.edu/RePEc/bocode/l. According to Chen et al [14], the participants in the OBOR initiative and China's Asian neighbors should be excluded as control units without the treatment. Our selected countries for synthesizing the counterfactual include Argentina, Italy, Canada, Mexico, Egypt, Spain, France, Switzerland, Germany, and the UK, which coincidentally satisfy the presumed selection criteria, given that they are geographically remote from and have significant cultural differences with China.…”