Gems Guo@guoxuJapanFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experienceguoxu has not updated employment details yet.Educationguoxu has not updated education details yet.