C220 A Feast

The next day, Gu Dinglan sent a servant to invite the old man with a strange illness back to the He Ren Tang.

After the old man drank the soup that Gu Dinglan had prepared, his face first alternated between clear and dark, then directly spat out three mouthfuls of black blood in the hall of the He Ren Tang.

Gu Dinglan had long been prepared. He let the servant catch the black blood in a basin