Inbound travelers to Shanghai, no matter whether vaccinated or not, are all required to undergo quarantine for a number of days and receive COVID-19 nucleic acid tests.
The source responded to the news "Consulate urges to clarify rules for vaccinated arrivals", which quoted the Spanish consulate in Shanghai as saying some foreign citizens who have been inoculated with COVID-19 vaccines "are being put in hospital…for three or four days upon arrival in China."
The source said that as far as he knows, Shanghai's current entry policy on inbound visitors that are vaccinated "is the same" as those who have not been vaccinated.
To prevent potential import and transmission of the virus, at present Shanghai treats foreign and Chinese inbound visitors equally, no matter whether they have been inoculated with COVID-19 vaccines or not.