The criticism comes after a report that Meta was exploring selling Quest headsets in China, despite Zuckerberg's past criticism of Chinese industrial espionage.
As the entertainment industry faces another disruptive technology, the WGA is demanding that regulatory standards around AI ensure fair labor conditions.
The deal is the biotech company's first agreement with China after the Asian nation repeatedly refused to accept mRNA vaccines from U.S.-based manufacturers.
An EU foreign affairs spokesperson confirmed to CNBC that Borrell's team had been told by their Chinese counterparts the new dates of July 10-11 were no longer possible.
"If you have the frame of mind that interviewing is going to be a marathon, you'll expect it and you'll be better prepared to see things through until the end," said one expert.