What did the common people invent to avoid the disaster of war, but in the end it led to a catastrophe of killing everyone?

We now like to call people who say one thing and do another "two-faced". But did you know that "two-faced" actually comes from an ancient thing? What's the story behind it?

"Double-faced" originally came from "two-faced cards". At the end of the Yuan Dynasty, the political power was corrupt and wars continued for years. Officials accept bribes and bend the law, further exploiting people living in poverty. This eventually led to chaos, with many rebels rising up against the corrupt rule. Among them, a volunteer army headed by Zhu Yuanzhang launched a fierce battle with the Yuan army in Henan.

The two sides were evenly matched and fought for a long time. No matter which party comes, the people must hang up corresponding signs to express their welcome. Otherwise, there will be trouble and even death. As a result, frequent changes are painful. At this time, someone came up with a way and found a thin piece of wood. On one side he wrote: "Welcome the Yuan army and protect the people's safety." On the other side, he wrote: "Welcome the rebel army and expel the Baoguo for the people." Whichever way you enter the city, turn to that side. Since frequent slogan changes are not required, people follow suit.

The bad thing was that one day, Zhu Yuanzhang and General Chang Yuechun came to the city and felt very proud to see "Welcome the Soldiers" hanging on every house. Zhu Yuanzhang accidentally saw a child playing wooden cards. Then I saw the slogans on both sides and got very angry. Then I went from house to house and saw that they were all "double-sided cards."

So, Zhu Yuanzhang ordered all those with double-sided signs on their doors to be executed, regardless of age. From here we can also see that the rulers vent their anger on ordinary people, and the "two-faced cards" represent the helplessness and pain of many people.