Kaihui Zheng@zhengkaihui1211ChinaFollow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencezhengkaihui1211 has not updated employment details yet.Educationzhengkaihui1211 has not updated education details yet.