Yunwen Lei@yunwenlAndroid DeveloperFollow BadgesProblem SolvingJavaDays of Code CertificationsCertificate: Java (Basic)VerifiedskillWork Experienceyunwenl has not updated employment details yet.Educationyunwenl has not updated education details yet.Linksyunwenl has not updated links details yet. Skillsyunwenl has not updated skills details yet.