Yingying Dong@yd2323Follow BadgesProblem Solving CertificationsCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Basic)VerifiedskillWork Experienceyd2323 has not updated employment details yet.Educationyd2323 has not updated education details yet.Linksyd2323 has not updated links details yet. Skillsyd2323 has not updated skills details yet.