An iceberg of data from this app is stored and can be analysed by China. It also gives access to a vast number of people's phones and their exact location.

News that an EU unit watered down a report on Covid-19 after threats by Beijing has put a focus on Europe's deteriorating ties with China.

Experts raised concerns about the Wuhan lab during an accreditation process - concerns that were amplified after the Covid-19 pandemic spread from the same city