The first snow of the season falls in Beijing on Nov 6, 2021. (Photo: CFP)

This aerial photograph taken on Nov 6, 2021 shows the Haut-Koenigsbourg castle at sunrise, in Orschwiller, Eastern France. (Photo: AFP)

Night illumination of the National Exhibition and Convention Center in Shanghai, Nov 2, 2021. (Photo: China News Service)

Visitors walk past snacks exhibited at the Food and Agricultural Products Exhibition Area of the 4th China International Import Expo (CIIE) in East China's Shanghai, Nov 6, 2021. Various foods from around the world are showcased during the 4th CIIE in Shanghai. (Photo: Xinhua)

A COVID-19 inspired exhibit is pictured in the 'Innovation in Sugar' class as judging takes place in the cake competion area on the opening day of Cake International at the NEC in Birmingham, Central England on Nov 5, 2021, a major three day cake decorating, sugarcraft and baking show. (Photo: AFP)

Workers are busy packaging goods at an e-commerce industrial zone in Lianyungang, Jiangsu Province on Nov 1, as China's Singles Day shopping festival begins. (Photo: China Daily)

Swedish climate activist Greta Thunberg, center, poses for a group photograph with youth climate activists on the fringes of the COP26 U.N. Climate Summit, in Glasgow, Scotland, Monday, Nov 1, 2021. (Photo: AP)

People walk in a flooded St. Mark's Square in Venice, Italy, Friday, Nov 5, 2021. After Venice suffered the second-worst flood in its history in November 2019, it was inundated with four more exceptional tides within six weeks, shocking Venetians and triggering fears about the worsening impact of climate change. (Photo: AP)

Devotee light oil lamps to Hindu Goddess Lakshmi during the Hindu festival of lights, Diwali at Vishnu temple in Bangkok, Thailand, Thursday, Nov 4, 2021. Diwali is one of Hinduism's most important festivals, dedicated to the worship of the goddess of wealth Lakshmi. (Photo: AP)

Tourists and citizens watch and feed the red-beaked gulls at Haigeng Dam in Kunming, Southwest China's Yunnan Province, Nov 3, 2021. (Photo: China News Service)