"Trouble" refers to the damage or failure of objects, and it is also a metaphor for mistakes in work. The old topic Su Shi's "Continued Miscellaneous Compilation": "I am afraid of being known: there is something wrong with selling horses."
The original "fault" refers to the defect of the coat color of domestic animals (especially horses). In ancient China, horses played an important role in people's lives. Therefore, when people buy horses, the requirements for horses are particularly strict. Moreover, when the ancients looked at horses, they often looked at the color and defects of a horse first, and judged the quality of the horse accordingly.
Probably from the Song Dynasty, "shortcomings" began to refer to the shortcomings of people or things. After modern times, the original meaning of the word "fault" was gradually forgotten by people.
Ant Manor's latest answer:
When cola was first invented, it was used as a potion to treat diseases. /kloc-in the 0/9th century, a pharmacist accidentally invented a unique taste potion, which is the predecessor of cola, while developing painkillers. Later, the formula was constantly adjusted and improved, and coke eventually became a popular drink in the world.
Coca-Cola was invented by American pharmacist john pemberton. He hopes to create a medicinal mixed drink, which can refresh, relieve fatigue and treat headaches. Pemberton's "Cococola" was originally gasoline-free. It was mixed with cold water. It was only because of an accidental accident that it became a carbonated drink.
1On the afternoon of May 8, 886, an alcoholic stumbled to the pharmacy in pemberton. Say to the clerk, "Have a cup of medicine for headache and brain fever." The clerk was supposed to go to the faucet to replenish water, but the faucet was more than two meters away from him, and he was too lazy to walk around, so he picked up the soda water nearby and mixed it with Cocoa Calari.
As a result, drunkards actually like it. He drank one cup after another and kept saying, "It's delicious. Delicious. " Alcoholics also advertise the magical effect of this non-alcoholic drink everywhere. Before john pemberton died, they sold the patent right. Forty years later, people all over the world knew about Coca-Cola.