What do you mean by suspicious letters?

1.credit [xn ò ng] Trust gained by completing what is agreed with others.

2. Confidence [zixūn] Believe in yourself: confidence. I am confident that I can finish this task.

3. Confidence, the psychological state of believing that one's wishes or expectations will be realized.

I believe that [Xiāng xūn] thinks this is correct or true, there is no doubt: I believe their experiment will be successful.

5. Extorting a confession by torture [bΟ gΟ ng x Ο n] Interrogators use corporal punishment, disguised corporal punishment or other threatening means to extort a confession from the person being interrogated. Once they have a confession, they will believe it and finalize the case.

6. I can't believe [XIN49Jí]. I can't trust you.

7. with a grain of salt? Some people believe it, but others doubt it.

Source: San Guokang's "Answering a Difficult House without Good or Bad Luck": "Those who make a fortune can choose to follow the tiger. What is a grain of salt? "

If divination is the reason why tigers can predict and choose, then what is dubious?