How can one deal with children's questions about the Signs of the Hour, and what should be said to those who tell them about them?

He should be answered with the signs of the Hour in a simple manner. If he does not comprehend, his interlocutor should be advised to stop speaking with him, because one should only address a person with what they understand. Ali (may Allah be pleased with him) said: "Speak to the people about what they know. Do you wish that Allah and His Messenger be denied?" And Ibn Mas'ud (may Allah be pleased with him) said: "You do not speak to a people with a discourse that their minds cannot grasp, but that it becomes a tribulation for some of them."