How to claim Canada US tax treaty for Chinese Pension and salary Article 15 & 20 of https://www.docin.com/p-xxxxxxxxx.html ?

I'm a resident of Canada/citizen of China, I received pension from my previouse employer. I reported this income in my tax return but I don't how to claim the tax treaty in the return.

Seniors and students

Here is how to report foreign income, pension, and other foreign amounts: https://turbotax.community.intuit.ca/replies/2647976

Here is how to enter foreign income that is subject to a tax treaty: https://turbotax.community.intuit.ca/replies/2647756