Photo taken on Sept. 2, 2021 shows a golden mask discovered at the No. 3 sacrificial pit of the Sanxingdui Ruins site in southwest China's Sichuan Province. (Photo: Xinhua)

A bronze parapet bearing the names of victims in the 9/11 attacks is adorned with flowers at the National September 11 Memorial and Museum in New York, the United States, Sept. 10, 2021. (Photo: Xinhua)

A light show is presented on Canton Tower for celebrating the Teachers' Day on Sept. 9, 2021. (Photo: chinadaily.com.cn)

The restored hands of the clock on Elizabeth Tower are seen in their original Prussian blue color, on Sept. 9, 2021 in London, England. Elizabeth Tower, which contains Big Ben, has been covered in scaffolding since 2017, as part of an 80-million-pound refurbishment. During the process, it was discovered that its clock hands were originally blue, rather than black. (Photo: CFP)

Residents visit a lantern show displayed at the Hysan Place in the Causeway Bay, Hong Kong Special Administrative Region, Sept. 9, 2021. The lantern show was held as a prelude for the upcoming Mid-Autumn Festival, a traditional Chinese festival falling on Sept. 21 this year. (Photo: China News Service)

Children play at a park in Kabul, Afghanistan, Friday, Sept. 10, 2021. (Photo: AP)

A giant, roaring torrent carrying a large amount of yellow sediment has created a spectacular early autumn scene at Hukou Waterfall, Yellow River in Qinjin Valley. (Photo: China News Service)

Hot air balloons rise during the annual Snowmass Balloon Festival, Friday, Sept. 10, 2021, in Snowmass Village, Colo. (Photo: AP)

Aerial photo shows a villager picking edible roses in Mile, southwest China's Yunnan Province, Sept. 9, 2021. About 73.33 hectares of edible roses have been planted in Xiaohebian Village of Mile in recent years. The edible rose industry has helped promote local agriculture and boost the income of locals. (Photo: Xinhua)

Hundreds of wooden boats resemble like flowers in Dhaka River Port, Bangladesh on Sept. 7, 2021, as they fan out around their moorings. The boats, decorated with colorful patterned rugs, are ready to transport workers from the outskirts of the city to their jobs in the center. (Photo: CFP)