本文简要回顾了作者与陈式刚老师的交往及受其指导的经历.陈式刚老师理论功底深厚，其对作者的学术指导极具启发性，如针对双阱中玻色 — 爱因斯坦凝聚体临界行为及大自旋隧穿研究，提出关键思路，引导作者完善研究.陈式刚善于应用线性化、微扰等方法研究复杂物理过程，对作者影响深远.文中亦展现了陈老师安静专注、热爱科学的生活态度，表达了对其九十华诞的祝福.

This paper briefly reviews the authors interactions with and guidance received from Professor Chen Shigang. Professor Chen has a profound theoretical foundation, and his academic guidance to the author is highly inspiring. For instance, in research on the critical behavior of Bose-Einstein condensates in double wells and large spin tunneling, he put forward key ideas and guided the author to improve the research. Chen Shigang is skilled in applying methods such as linearization and perturbation to study complex physical processes, which has a profound impact on the author. The paper also presents Professor Chens life attitude of being quiet, focused and passionate about science, and expresses wishes for his 90th birthday.