Thousands of prefabricated rooms fill a vast field on the outskirts of China's Shijiazhuang city as construction crews work around the clock to erect a large quarantine facility to curb the city's growing Covid-19 outbreak.
Total case numbers remain well below what China saw at the height of the outbreak in early 2020, but concerns about a new wave are growing with the Lunar New Year a month away.
Beijing has reported seven new local COVID-19 cases, six of which are from Daxing district where the city's worldwide airport is situated.
"The super-spreading phenomenon occurred in our province mainly because when the super-spreader was discovered, he was still in the early phase of his infection and had relatively strong ability to shed the virus", Zhao Qinglong, an official with the Jilin provincial disease control and prevention centre, told state-run news agency Xinhua, which overseas media reported.
That would be a drop of 40 per cent from the level in 2019, but 10 per cent more than last year's season and two times current levels, she said.
China's week-long Lunar New Year holiday begins on February 11.
According to the Longyao county government, the private laboratory based in Jinan, the capital of eastern China's Shandong province, told authorities on Thursday that all 315,000 tests conducted on the local population had come back negative.
China's northeastern provinces have been the hardest-hit due to the virus with Hebei, Heilongjiang and Jilin becoming the epicentre of the virus.
Songyuan city in Jilin on Wednesday ordered a lockdown for the main urban area under its jurisdiction and began mass testing.
In Heilongjiang province, authorities shut down gyms, coffee shops, karaoke and religious institutions amid a surge in cases. The man was tied to a tree and verbally abused under the party official's directions.
The total number of confirmed COVID-19 cases in mainland China now stands at 88 118, while the death toll remains unchanged at 4 635.
China reported 103 new cases on Wednesday, including the seven in Beijing.
By the end of Tuesday, 9,720 confirmed COVID-19 cases, including 165 deaths, had been reported in the Hong Kong Special Administrative Region (SAR), 46 cases in the Macau SAR, and 868 cases, including seven deaths, in Taiwan.