The National Health Commission reported 36 new cases of coronavirus infection for the mainland, all but one from people arriving from overseas, as well as 130 new asymptomatic cases in the 24 hours to the end of Tuesday.
Beijing has reported a steady drop in new COVID-19 cases over the last few weeks, painting a rosy picture while the rest of the world struggles to fight the pandemic.
COVID-19 first emerged in Wuhan at the end of previous year.
The announcement about asymptomatic cases came as the other countries are including asymptomatic cases in their number of confirmed cases for their potential to infect others. China's Premier Li Keqiang has ordered health officials to scale up screening of people with no symptoms of the coronavirus.
It's unclear whether that figure includes asymptomatic cases.
There is no official explanation why these cases have not been included earlier.
Asymptomatic cases refer to people infected by COVID-19 but show delayed or no symptoms.
Dr Zhong Nanshan, one of China's most renowned experts in respiratory diseases, reinforced Dr Zeng's view during an interview with China Central Television in which he said that the disease's curve and the current mortality rate suggested that the number of undetected asymptomatic carriers is unlikely to be large in the country. These patients won't be released until they test negative for the virus twice, he added. According to data Caixin obtained, asymptomatic individuals accounted for more than one in six detected infections in the province of Heilongjiang on February 25.
When Wuhan was struggling with the virus attack, some 56 million people in the city and the surrounding province of Hubei were restricted inside their homes, with all their travels suspended. Then on Wednesday, the country reported a fall in the new cases, with nearly all cases imported from overseas.
Ottar Bjornstad, distinguished professor of entomology and biology at Penn State, said: "One fascinating aspect of our work is that it shows the power of novel data streams such as cell phone mobility data".
Besides the asymptomatic cases, there are reports of 35 new imported cases. "It's still stressful to control imported cases and prevent a resurgence of indigenous cases, and the demand for related medical supplies also remains high", foreign ministry spokeswoman Hua Chunying said at a daily briefing Tuesday.
A serologic test can determine whether a person has been exposed to a particular microorganism. The newspaper, which cited unnamed sources, said scientists told UK Prime Minister Boris Johnson that China could have downplayed its number of confirmed coronavirus cases "by a factor of 15 to 40 times". It also revealed tallies for the close contacts of this population, which the province was monitoring.