He has gone.

My boss, who gave me a chance and invited me here, has left our team. Even though I don't know how competent his management skills are, I really appreciated his kindness to take care of me so much, especially when I had just come here and I didn't feel comfortable in this new environment. And also he has never forced anything on me. It seemed that he basically trusted that his staff would solve the problems by themselves. To be honest, I like his management style and also his character, which didn't care about small things and knew well what an engineer likes to do. I am sure that it will be difficult to find his replacement, and that I will miss him soon. I really hope that he does well at his next challenge.