Inasmuch as research has held the increase in youth gang activities responsible for the escalating level of crime and delinquency in Chinese societies, ascertaining risk or protective factors of gang involvement among Chinese youths is crucial. The factors include those associated with social control, social learning, and cognitive development. To investigate these factors across different sociocultural contexts, we surveyed delinquents in three diverse Chinese cities--Hong Kong, Guangzhou, and Shanghai. Because of the sociocultural differences among the three cities, social control by parents and cognitive development are likely to be greater protective factors in terms of youths' gang involvement in Hong Kong, while social control by teachers is likely to be a greater protective factor in mainland cities. Results bear out these hypotheses. (Contains 4 tables and an appendix entitled "Items of Measurement.") [This study was funded by a grant from the Social Science and Educational Panel of the Faculty of Social Science, Chinese University of Hong Kong.]