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When there is less communication between parents and children, conflict will be triggered and the relationship will be estranged. The purpose of this parent-child communication machine is to improve the communication between parents and children. The communication machine uses the role of "tree hole", when the child is in a bad mood or is scolded by parents, it can talk to the communication machine about its own heart to adjust its mood, and the parents will automatically send an alarm when reprimanding the child.