@tyuan73United StatesFollowAboutEducationPeking University, Peking BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencetyuan73 has not updated employment details yet.EducationPeking University, Peking