"That's not appropriate," Xi told Trudeau on Wednesday at the G20 summit in Indonesia.
The 40-second video, captured by a Canadian news cameraman, offers a rare glimpse into Xi's personal style of diplomacy.
"Everything we discussed has been leaked to the paper, that's not appropriate," Xi told Trudeau, per a translator who was with Xi during the exchange.
"Otherwise, it will be hard to say what will happen," the Chinese leader said.
Remarking on his exchange with Xi, Trudeau said that "not every conversation is going to be easy," per The Globe and Mail.