e commerce – What are the checkout flows for Wechat Pay and AliPay?

I am designing a checkout flow that includes AliPay and Wechat Pay as payment options. However, I am struggling to understand what the user should see after they have paid and come back to our website.

My best guess is the “Review Order” page where they recheck all their info before clicking “Submit Order” (Similar to a Paypal checkout flow, where the “Submit Order” CTA initiates the transaction).

However, it seems like both AliPay and Wechat pay initiate the transaction via their app, and not when the user clicks “Submit Payment” in the website. Does anyone know if this is correct?