LU ZHANG@zhanglu_xidianAustraliaFollow BadgesProblem SolvingJavaDays of CodeRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillWork Experiencezhanglu_xidian has not updated employment details yet.Educationzhanglu_xidian has not updated education details yet.