Safari translated text from Chinese site linked to in thread:

https://www.rfi.fr/cn/中国/20210906-北京天安门广场昨飞来黑天鹅-网络议论有引申

After the flag-raising ceremony in Tiananmen Square, Beijing, China, yesterday morning, a black swan landed in a rare way, attracting a large number of people to watch. The appearance of black swans in Tiananmen Square has triggered heated discussion on the Internet, and many netizens mentioned many "black swan incidents". Black swans are metaphorically rare and unexpected events. There is no precedent before they occur, and once they happen, they will have extreme effects.

According to the news quoted by the Central News Agency today, the black swan flew to Tiananmen Square by mistake, and the onlookers were dispersed. According to Hong Kong Ming Pao and other media today, by about 8 a.m. yesterday, the staff of the Wildlife Rescue Center who rushed to the scene captured the black swans and sent them to the base in Shunyi, while onlookers were dispersed.

Wildlife experts said that black swans originated in Australia, and black swans in Beijing are cultivated.

Some Chinese netizens mentioned that from the subprime mortgage crisis to the tsunami in Southeast Asia, from the 9/11 incident in the United States to the sinking of the Titanic, the black swan exists in all fields, and it cannot escape its control in finance, business, economy and life.

Xi Jinping, the leader of the Communist Party of China, has also mentioned the Black Swan incident many times. On the occasion of the 70th anniversary of the founding of the Communist Party of China in 2019, the Sino-US trade war was in full swing. Xi Jinping delivered a speech to key provincial and ministerial officials at the Central Party School in January of that year, reminding him that the international situation was turbulent and the external environment was complex and severe. We should be highly vigilant against the "black swan" and "grey rhinoceros" incidents, and to do a good job. Strategic active battle to save danger and turn danger into opportunity. In January this year, when the Political Bureau of the Central Committee of the Communist Party of China was collectively studying the key work of the 14th Five-Year Plan, Xi Jinping once again requested that we have a deep understanding of the impact of the intricate international situation on China, maintain strategic determination but also be good at responding positively, make a good plan for various black swan and gray rhinoceros incidents, and constantly strengthen development. The security of the exhibition.

According to online information, before Europeans discovered Australia in the 18th century, they saw only white species of swans. It was not until they found Australia and saw the local black swans that they opened their horizons. And only one black swan's observation results can invalidate the conclusion of induction and reasoning from countless observations of white swans, which leads to People's reflection on cognition has arisen.

The Central News Agency said that "black swan" therefore metaphorizes extremely rare events that are not usually expected. There is no precedent before they occur, and once they happen, they will have extreme effects.