When Zeng Shen’s father died, the boy climbed a mountain every day for firewood to care for his mother. One day, after he hiked the mountain, a guest arrived, but Zeng Shen’s mother was poor and had no way to properly welcome him. Anxiously, she bit her finger so hard that it bled. Zeng Shen felt a pain in his heart, detecting something wrong back home. He ran down the mountain to his ailing mother, who explained the injury and expressed gratitude for his power to feel her thoughts from a distance.