Standard boiler-plate codeshare approval. The interesting part is "on flights operated by WestJet between China and Canada".
Another codeshare, this the reverse, where it is WestJet putting its name on Azores Airlines flights.
https://otc-cta.gc.ca/eng/ruling/a-2019-90
WestJet has also recently renewed their codeshares with Air France and QANTAS.