A man invited his friends to dinner and killed them all. Why?

Once a blind man went out to play with his friends, but he was in danger on the way. Finally, there was no food, and everyone was starving. Then these friends suggested that everyone cut off a hand to fill their stomachs to survive the crisis; But these friends don't want to cut off their hands, only blind people do. Later, all the blind people and friends were saved.

Until this day, the blind man's birthday, invite these friends to help him celebrate his birthday. Before singing the birthday song, these friends lit candles and applauded him for singing the birthday song. The blind man heard their clapping and knew that they had deceived themselves, so he killed them.

Extended data

This story comes from the game Guiling Decoction, which is a classic example of Guiling Decoction. Turtle soup game is divided into three steps:

1. First, the questioner gives an incomplete story (noodle soup).

2. Then ask the questioner to ask various possible questions, and the questioner can only say "yes", "no" or "irrelevant" when answering these questions (therefore, the questioner must infer the whole story from limited clues and piece together the whole story through limited questions and answers).

Finally, the questioner must give the answer to the question (that is, the bottom of the soup), regardless of whether the questioner guessed the answer correctly in the end. ?

"A man invited his friends to dinner, but he killed all his friends. Why? " This is noodle soup.