The so-called unlocking of a Heart-devouring Gu means planting a Heart-devouring Gu in each of the two parties again and then guiding it out when the time arises.
"Let him plant another Gu?" Wufu widened his eyes at Ah Sang, finding it hard to believe what he heard.
"You two are lovers. Plant the Heart-devouring Gu, with the Mother Gu in you, then nourish the Child Gu with your heart's blood," Ah Sang said slowly. "After one month, stop nourishing it. Use your heart's blood, mixed with Love Flower and various herbs as a guide, aided by Miao Technique. When the Gu Insect gets extremely hungry from lack of nourishment, it can be guided out using the guide made with heart's blood."
Wufu asked, "Has this method been tested in Miaojiang?"
