Shifeng Xu@xsfpkuFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencexsfpku has not updated employment details yet.Educationxsfpku has not updated education details yet.LinksLinkedinhttps://www.linkedin.com/in/shifeng-xu-a1b93517/ Skillsxsfpku has not updated skills details yet.