A little boy looks at the light projection on the National Library of Australia during the Enlighten Festival in Canberra, Australia, Feb. 28, 2021. The annual Enlighten Festival runs from Feb. 26 to March 8 in Canberra with landmark buildings illuminated with colorful lights. People visiting the festival this year are required to register in advance and keep social distancing. (Photo by Liu Changchang/Xinhua)