Strategic threat doesn't have to mean Type 99 Battle tanks rolling into Vancouver.
The concern many analysts raise about China is influence and leverage.
Chinese state-linked firms have invested in Canadian mining, energy, agriculture, and technology sectors. In some cases, Ottawa has blocked or unwound deals on national security grounds (for example, critical minerals). That's a strategic control of supply chains.
Purchases of agricultural land or property near critical infrastructure ia another issue, and why Canada has tightened foreign buyer rules and increased security screening.
CSIS and parliamentary reports have publicly stated that China has engaged in foreign interference activities in Canada including diaspora intimidation and political influence efforts.
We have elected Members of Parliament who hide in the bathroom rather than vote on issues unfriendly to China.
“The supreme art of war is to subdue the enemy without fighting.”