Finally, the moment comes... may he keep flying like a superman in microgravity.

Definitely, my greatest regret is unable to keep learning physics at university, which used to be my favorite subject, and also, had been what I set out to do in those years... To be honest, the more I learn about what I was major in now, the more dwarf I realize I am...

Still have to pay tribute to this legend, who just passed by today.