I'm so happy to learn that you've just passed your thesis defense. I'm so pleased to hear that you've got the admission by the Cambridge University to further your graduate study.
祝贺行为 Please accept my warmest congratulations.
对成功的评价和对对方的钦佩；You really deserve it because… This meant years of your hard work, and it's an achievement you can well be proud of. I have been appreciating your excellent performance in study and ability in your work.
美好祝愿； You will have a brilliant future. I believe our school life will be more colorful under your leadership. I believe that the knowledge you've acquired will enable you to be successful in whatever aspect of life. Congratulations again and all good wishes for your future study.
I am so excited to learn that you've been admitted by Shanghai International Studies University as a graduate. Warm congratulations on the realization of your dream. This has meant years of your hard work, and you can really be proud of it.
Your success is really an encouragement to me and I wish we can meet there next year.
Best wishes to you.