China urged European countries to deny visas to Taiwanese politicians, arguing EU border rules require it to protect relations with Beijing.

Chinese officials have delivered “legal advice” to European countries, urging them to bar Taiwanese politicians from entry. Diplomats told the Guardian the messages warned against crossing China’s “red lines”.

The approaches were made in November and December, through embassies in Beijing and in European capitals. They followed recent European visits by Taiwan’s vice-president, foreign minister and a former president.

China cited EU rules including the Schengen Borders Code, arguing Taiwan visits could harm member states’ international relations with Beijing. A note verbale also urged states to reject Taiwan “diplomatic passports” and block officials’ contacts.

Finland and Norway said they received the advice, and pointed to Schengen bodies for visa policy. The UK said entry decisions are based on UK laws and immigration rules.

Taiwan’s foreign ministry said the visits are unrelated to China and called the pressure interference. Officials familiar with the contacts said some recipients questioned China’s legal interpretation, but noted the warning tone.