Qin Lei@lqinrayFollow BadgesProblem SolvingJavaDays of CodeDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencelqinray has not updated employment details yet.EducationHarbin Institute of TechnologyLinkslqinray has not updated links details yet. Skillslqinray has not updated skills details yet.