A single father who was overwhelmed by the mortgage loan started by buying a box of colored pencils for his son and accidentally discovered a secret——
Every penny he spends on education will be doubled back from the treasury of other countries.
Years later, the island nation's economy collapsed and the United States' hegemony collapsed.
When the whole world was looking for this "biggest financial criminal in human history", he was squatting at the entrance of the alley, teaching his son to do math problems.
