Without a certificate from the laboratory, you will not be checked in for the flight.
In addition to the requirement to pass a PCR test for COVID, which must be done no earlier than 48 hours before departure, from January 17, 00:00 Beijing time citizens traveling to China must fill out a health declaration.
This can be done either through the mobile application of Chinese customs, or, much easier, through a special web platform. In the same place it is necessary to declare that you have a document with the test result. After filling out, a code will be generated that will be asked at the airport of arrival.
Earlier, this questionnaire, the need to provide any data about the passenger, flight, contacts and address of stay in China, is nowhere mentioned.
For concealing or providing false information, they threaten to be prosecuted under Chinese law. If it is proved that the deception contributed to the spread of infectious diseases, you will face “no more than three years in prison”. Without a certificate from the laboratory, you will not be checked in for the flight.
The message of the diplomatic mission also asks you to use protective masks during the flight to China and use other personal protective equipment in order to reduce the risk of the spread of coronavirus.
Nothing is said about the conditions for entering the PRC through land checkpoints.