yangyu song@flyfy1Follow BadgesProblem SolvingDays of CodeRuby Certificationsflyfy1 has not earned any certificates yet. Work Experienceflyfy1 has not updated employment details yet.EducationNational University of Singapore (NUS), SingaporeLinksGithubhttps://github.com/flyfy1Portfoliohttp://flyfy1.github.io/ Skillsflyfy1 has not updated skills details yet.