Give Me One Billion at the Beginning and Let Me Travel Across the Heavens

When you, a mediocre person, get a button that gives you one billion as long as you press it, but the price is to be randomly transported to a world and survive for three days, would you like it? Should you choose to continue to be controlled by fate and live an ordinary life, or do you want to completely change your life? Press it and you will no longer be ordinary. The author is a newbie. This is my first book. The writing style must be very bad and my IQ is not high. It may be like a primary school student's composition. If you don't like it, don't criticize it. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.