What would you do if you had 4 billion KRW in cash?

Because apartment prices in Seoul have skyrocketed so much, assets worth billions feel somewhat common these days.
However, as of last year, I understand that the top 1% of net worth in Korea is around 3.4 billion KRW.
And since we've experienced both stock market surges and crashes this year, there won't be much difference by the end of the year.
I believe 4 billion KRW in cash—which puts you within the top 1%—is truly a massive amount of money.
If you had 4 billion KRW in cash after paying all your taxes, what would you do with it?