ye, han@yehan325600ChinaFollow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experienceyehan325600 has not updated employment details yet.Educationyehan325600 has not updated education details yet.