It came up during a U.S. Democratic presidential debate.
Passages in sensitive waters near the mainland usually anger Beijing.
Carrie Lam says the government won't bow to other demands.
Ottawa knows the "root cause" of tensions, the Chinese Embassy says.
The two sides faced off on the streets, exchanging chants.
If you're travelling to Hong Kong use caution as huge demonstrations continue, the Canadian minister said.
Andrew Scheer has accused Prime Minister Justin Trudeau of not standing up for Canada amid tensions.
McCallum said he warned Chinese officials that more bans on Canadian imports could help Conservatives win.
She's one of the biggest names in China.
We have questions.