On February 6, 2021, all members gathered together to make a systematic summary of this year's experimental work. Everyone has achieved plentiful and substantial fruits through this year's hard work. We benefited a lot from this summary work report. Following the delicious pizza lunch, all members go on to enjoy the hot pot feast in Changtai square as dinner. Prof. Huang encouraged us to keep up our efforts in our research career next year, and told everyone to be alert on the way home.