Zhengyang Song@songzy12ChinaFollow BadgesProblem SolvingCPPJavaPythonSqlC languageRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Python (Basic)VerifiedskillWork Experiencesongzy12 has not updated employment details yet.Educationsongzy12 has not updated education details yet.