Li Shimin can predict good luck or bad luck. Who will rush out and throw the turtle shell on the ground?

Zhang and Zhang looked up and saw the fortune teller. They immediately rushed over, grabbed the turtle shell and fell to the ground. Then, he said a cruel word to Li Shimin, the stunned King of Qin, and others: Any diviner must be suspicious and hesitant. Since there is no doubt, what the hell is going on? If it is unlucky, it is impossible. May the king think about it.