Money trivia:Why most of the banknotes are frontal portraits, while coins are side

Money trivia:Why most of the banknotes are frontal portraits, while coins are side

As we all know, the fineness and complexity of the frontal portraits are able to prevent counterfeit banknotes…
Afternoon tea trivia:Why are many restaurants afternoon tea refilling for free, not afraid of losing money?

Afternoon tea trivia:Why are many restaurants afternoon tea refilling for free, not afraid of losing money?

In the profit part, afternoon tea is often in the form of beverages and desserts, the profit is…