@OldChenFollow BadgesProblem SolvingCPPPythonDays of CodeDays ofStatistics CertificationsCertificate: Python (Basic)VerifiedskillCertificate: C++ (Basic)VerifiedskillWork ExperienceOldChen has not updated employment details yet.EducationHarbin Institute of Technology, HarbinLinksOldChen has not updated links details yet. SkillsOldChen has not updated skills details yet.