So was the sequence:
1) update Alipay
2) update bank in China
3) update WeChat Pay?
prior to updating the bank, were you able to use Alipay (with underlying China bank card)? That’s my worry updating Alipay and WechatPay before getting to China to update the Chinese banks.
1) Update in April - Alipay as they had the function in the apps . WeChat pay -No function for this found on apps
2) In Oct , went to all the China bank to update my new passport
3) New passport all updated with the China banks than , I updated the latest version of WeChat Pay and found that they now have this updating of new passport feature and did accordingly .
Approval also approved in 3 mins even though the notice from apps stated that it takes between 1-3days .
I didn't use any of them until I did the updating.
My guess is you can use it even before updating the new passport as long as your old passport expiry date is still valid .
In my opinion I don't think it will
affect any transaction as i believe Alipay and Wechat pay check the new passport vs your old passport in their system rather than the bank;
that you are the same person except the number is changed eg the NRIC number is the same .( Plus facial ID).