Xin Liu@lxxxxFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencelxxxx has not updated employment details yet.Educationlxxxx has not updated education details yet.Linkslxxxx has not updated links details yet. Skillslxxxx has not updated skills details yet.