In principle, credit cards cannot be used for investment or wealth management, but in real life, many of them can be used to buy wealth management products, because wealth management companies may make some modifications, such as swiping them into the accounts of other companies (consumer or consulting service companies) instead of their own (investment companies) and then transferring them to investment companies.

Simply put, if you buy wealth management products, successfully swiping a credit card means spending, not investing.