Putuo did not feel that his method was questionable or inappropriate, but explained patiently:
"Once this Gu worm is stained with fresh blood and enters the body, it will remember the smell of the master's blood. After luring it out, it needs another blood to nourish it. Otherwise, it will follow the memories and return to Madam's body.
"When it entered the Madam's body, there were no wounds. Moreover, its speed is not something that an ordinary person could imagine. Perhaps before I can react, it has already entered the body once again. After that... There is no possibility of luring it out of the body."
"Moreover, the person who has to accept the Gu poison must be a female. A male must not. The harmony between yin and yang is something that has existed since ancient times."
