林哥很赞，能选上他的研究生就稳了
Prof. Zhang specializes in on-chip integrated photonics, which is a very promising field now and in the future. He is so kind and helpful to his students and provides great opportunities for us. Best wishes!
张老师是一位特别认真负责有创造性的老师，能考上他的研究生就很幸福了