XHXiaosong He@hxs91ChinaFollowBadgesProblem SolvingVerified Skills & RolesCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencehxs91 has not updated employment details yet.Educationhxs91 has not updated education details yet.