He went to King Luke's mansion in order to check his condition. When he arrived, he saw the old man had pale skin tone, yellowish eyes, and nails. Yet, he couldn't determine if that was cancer or not. Since he has no equipment or ability to do that even he came from the advanced world, he still needed a laboratory result to find out the right diagnosis.
Aside from that, even he discovered King Luke had cancer. The question here was, what he could do? He never put himself into the course of the medicine, the herbal medicine was just can be applied to wounds or any injury. So curing cancer would be really hard for him as learning to medical staff took a decade before a certain person mastered it.
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As soon as they passed at the golden door that had a lion image. He immediately bowed his head to show respect to the owner of this huge village.
