There is not much connection between the two, and it can only be a credit investigation. I had the same application before, but I didn't do it.

First, apply for a China Airlines bosom friend membership card in China, and then apply for a China Airlines bosom friend joint credit card in China Bank through them. (a suggestion)

Generally, it takes 15-20 days to review the card. If so, the estimated amount is 1W, and it will increase in the future.