Chinese visitors are to be subjected to stricter testing in other countries after an increase in the number of COVID-19 cases ©Getty Images

Chinese state media have announced the sudden death at 39 of soprano Chu Lanlan, a performer who sang during the Beijing 2008 Olympics.

Lanlan was reported to have died from complications related to COVID-19.

She had first appeared as a child actress in the Chinese State Television (CCTV) series "Affection" when she was only eight years old.

Later, she studied at the Chinese Academy of Traditional Opera and became a renowned performer on the stage.

Lanlan also taught at the Beijing College of Opera and the Arts College, founded the I Beijing Opera group and led the Lanxin Troupe, as part of the same initiative.

She also choreographed songs from the celebrated 1993 film "Farewell My Concubine" for the stage.

She was also a prominent supporter of a Beijing charity to help with the physical and mental growth of rural children.

Chu had made her last public appearance at a concert in November when it was reported that she was accompanied by her seven year old son.

Fans reported on social media that she had appeared in good health during the performance but her death was confirmed less than a month later.

According to World Health Organisation figures, there have been 10,167,676 cases of COVID-19 in China as of December 23 2022, resulting in 31,378 deaths.

The 2022 Asian Games in Hangzhou, scheduled for last September, have been postponed until 2023.

China has been forced to cancel many other sporting events as a result of the pandemic.

In addition, athletes from China, Hong Kong and Macao arriving at the Lake Placid 2032 World Winter University Games will face stricter testing procedures introduced on Wednesday by the United States Government.