I read the answers of most people on this thread, and everyone did not prepare for this day. I think this is also a very good thing. Everyone is very young and has not yet reached the age or time to consider this issue. However, now this problem should be solved.
The best way is to summarize all the financial assets, on which platform the investment was made, and the platform account/password should be recorded; the bank card used and the bank card password should also be recorded, and then tell the family to make a backup.
Of course, if you are inconvenient to disclose so much information to your family, then you should at least tell your relatives about the investment of financial assets.
So it can be reminded here that it is necessary to report to family members regularly for investment and financial management.