Generals of the Great Song Dynasty.

Summary

Little Tai Zi has been poisoned, and the emperor is furious. Divine Doctor Qian determines that the poisoning is caused by lead, which is confirmed by Wang Ning An's investigation. Wang Ning An discovers that the lead poisoning is coming from the palace's water supply, specifically from a lead pipe used for drainage. The pipe has been leaching lead into the soil and water, affecting the imperial family's health. The emperor is shocked and outraged, realizing that the lead poisoning has been responsible for the deaths of many of his children and the infertility of his family members. He orders the removal of all lead pipes to prevent further harm.

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