10K views · 2.2K reactions | As we count down to the year’s end,2021has packed tons of goodies for all the tech and science junkies. It may be impossible to look back at all of them in a matter of minutes, but I tried my best to summarize the key technologies that have shaped 2021. Let’s all look forward to a better and more hopeful 2022. Wish everybody a happy New Year! #Yearender2021 #newyear2022 #technology2021 | Tech It Out with Yang Zhao | Facebook