Game rules

Preparation: 3 or more people, a deck of 52 playing cards, no jokers required. J, Q, and K are all wild cards and can replace any point. After the cards are shuffled and dealt out, players can look at their own cards; the player holding the 3 of clubs starts first.

The starting player chooses a point number for this round from A or 2 to 10, puts 1 to 5 cards face down in the center, and announces the number and points, such as "Two 7s". The player may be telling the truth or bluffing.
Any player can question the move before the next move is made. If no one questions, the next person will also play 1 to 5 cards and declare the same number.
On a challenge, reveal only the cards just played. Every card with the same number as the declared value, as well as all J, Q, and K, are considered consistent; as long as one of them does not match, the entire hand is considered a lie.
When it is declared false, the player takes away all the cards in the middle and accepts one unit; when it is declared true, the challenger takes away all the cards and accepts one unit.
If the challenge is successful, the questioner will start a new round; if the challenge fails, the original player will start a new round. In the new round, re-select A or a point from 2 to 10.
After the last move is made, others still have to be given a chance to question; only when the check is passed or no one questions it is considered passed. The person who still has cards in hand at the end loses.

Example: When 7 is announced in this round, 7, J, Q, and K can all be regarded as 7; if the previous hand was 7, Q, 4 and "three 7s" are announced, revealing the cards still shows that the claim was false.