System: How to Spend One Billion at the Beginning?

The impoverished Yang Feng was ruthlessly abandoned by his girlfriend. Heartbroken and lost, he unexpectedly obtained a system that defied the heavens. Bite! The first task: spend one billion! Bite! The second task: spend all 10 billion! Bite! The third task: spend all 100 billion! …… What? This villa only sold for 70 million? Too cheap! Well, can our luxury car be more expensive? Cheaper! When will all this money be spent... From then on, Yang Feng embarked on a different life.