ZHANG Gong, one of my best friends, was a PhD student in our laboratory. Today, He defended his dissertation on high-speed electro-hydraulic proportional valves, with beautiful slides and detailed his thesis work in the afternoon. specialists in the defense committee gave him good scores, although his thesis has some little problems. Indeed, he will correct them and then submit his thesis to the university degree committee.
I want to say congratulations to him and I wish he would have a best career.