xiangdong liao@liaoxd19test engineerFollow BadgesProblem SolvingCPPPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experienceliaoxd19 has not updated employment details yet.Educationliaoxd19 has not updated education details yet.Linksliaoxd19 has not updated links details yet. Skillsliaoxd19 has not updated skills details yet.