Cheng Zhang@sing1eeFollow BadgesProblem Solving Certificationssing1ee has not earned any certificates yet. Work Experiencesing1ee has not updated employment details yet.Educationsing1ee has not updated education details yet.LinksGithubhttps://github.com/sing1eePortfoliohttp://sing1ee.github.io Skillssing1ee has not updated skills details yet.