Hongyi Chen@chychyFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencechychy has not updated employment details yet.Educationchychy has not updated education details yet.Linkschychy has not updated links details yet. Skillschychy has not updated skills details yet.