First of all, 50% is10.5 million yuan to deposit in the bank or buy government bonds. This part of the money can't be used in an emergency, remember!
Second, if you want to make a radical investment, the rest of the money can be used to make stocks or more radical futures. There are risks, but the benefits are also great.
Third, if you don't know how to make stocks or futures or are afraid of taking risks, you can buy a life insurance with this money. Please ask the life insurance staff of the Information Department for details. There are many corresponding varieties suitable for your investment, and the yield is better than that in the bank.
Fourth, if you don't want to touch anything, just spend it. Life is too short to eat, drink and be merry.
I hope the answer will help you. If you have any questions, you can come to me and communicate with me ~