Logic Training Game Eight candies true and false

There are eight candies on the table, Kim says one of them is his, Kai says three of them are his, and George says seven of them are his;

Huh? How can it add up to more than eight? Looks like someone lied to get more candy...

King said, "George lied! "

Kai said, "Both Kim and George are lying!"

George said, "Kai lied!"

How many candies do the three of them have?

Hypothesis 1:

Kim did not lie, then George lied: "George said Kai lied" is a lie, so Kai did not lie, then what Kai said is correct, "Kim George lied", which conflicts with the assumption.

Hypothesis 2:

Kai did not lie, so Kim and George lied: "Kim said George lied" is a lie, so George did not lie, George said Kai lied, which conflicts with the hypothesis; if "George said Kai lied" is a lie, Kai did not lie, Although it does not conflict with the hypothesis, the reason for this hypothesis to be established is that the inference must be reasonable, and the inference of Kim's lie has conflicted.

George didn't lie, so Kai lied: "Kai said Kim and George lied" is a lie, there are three possibilities: Kim lied George did not lie; Kim did not lie George lied; Kim and George did not lie all can be established. If Kim lied and George did not lie, so "Kim said George lied" is a lie, so George did not lie, which is consistent; if Kim did not lie and George lied, which conflicts with the assumption; if Kim and George did not lie, but Kim said George lied, which conflicted with the premise.