Joke translated from Chinese:
Today I bought something and got the change, it was a fake one Yuan! How could it be??? Normally, people got 100 yuan fake money. One yuan fake money is seldom seen.
 
See what I got.
  | 
| Fake Money | 
  | 
| Real Money | 
See the difference?
Yeah, it is chairman Mao's hair style. Lol!
  | 
| Chairman Mao on one Yuan |