Xinyuan Cheng@xyc02StudentFollow BadgesProblem SolvingCPPDays of JSSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencexyc02 has not updated employment details yet.Educationxyc02 has not updated education details yet.Linksxyc02 has not updated links details yet. Skillsxyc02 has not updated skills details yet.