A girl mimics a model dressed as an ox to celebrate the Year of the Ox in the Beijing Aquarium on Wednesday. Chinese Lunar New Year's Eve fell on Thursday. (Photo: China Daily)

A visitor wearing a face mask walks down the staircase of the Vatican Museums, on Monday. The Vatican Museums reopened as of February 1. Visitors are required to make appointments on-line before arrival. (Photo: Xinhua)

Aerial photo taken on Tuesday, shows a fishpond at a breeding base in Gongliu county, Northwest China's Xinjiang Uyghur Autonomous Region. (Photo: Xinhua)

An actress performs during the 39th Fadjr International Theater Festival in Tehran, capital of Iran, on Monday. (Photo: VCG)

Photo taken on Thursday shows the snowy scene of the Potala Palace in Lhasa, Southwest China's Tibet Autonomous Region. (Photo: Xinhua)

A batch of China-donated Sinopharm COVID-19 vaccines arrived in Malabo, capital of Equatorial Guinea, on Wednesday. (Photo: Xinhua)

Novak Djokovic of Serbia serves during the men's singles second round match between Novak Djokovic of Serbia and Frances Tiafoe of the United States at the Australian Open in Melbourne Park, Melbourne, Australia, on Wednesday. (Photo: Xinhua)

Zheng Yingying, a medical worker from People's Hospital of Daowai District of Harbin, makes a hand heart gesture to her visiting son behind a glass door at a quarantine center in Harbin, Northeast China's Heilongjiang Province, on Wednesday. (Photo: Xinhua)

Visitors take photos of a stone Buddha head from Cave 8 of the Tianlongshan Grottoes during an exhibition at Luxun Museum in Beijing, capital of China, on Friday. A stone Buddha head that was stolen from China almost a century ago and recently retrieved was part of an exhibition at Beijing Luxun Museum. (Photo: Xinhua)

A woman walks past an exhibition poster of the Chinese character "fu," meaning blessings, for the upcoming Chinese Lunar New Year in Changzhou city, East China's Jiangsu Province, on Wednesday. (Photo: Xinhua)