Dong Huiying was refining Gu in a mountain cave when, because White Tiger always watched her like a hawk, she worried about being interrupted. So, she released a floral butterfly from a small porcelain bottle to keep White Tiger entertained.
The butterfly was average in appearance and its toxicity was not as potent as the purple butterfly's. White Tiger had once been frightened by a purple butterfly, and it seemed to have developed a grudge. Was it seeking revenge? In any case, it treated the butterfly as a substitute for the purple one, bounding and leaping after it as it fluttered out of the cave, joyfully enacting a fierce tiger's pursuit of a butterfly.
After a while.
"Roar——!"
A frustrated roar came from outside the cave, just as Dong Huiying finished refining a Gu. She sensed something unusual about White Tiger's roar and wondered what was amiss. She then placed the newly-refined Gu into the bottle and gracefully walked out of the cave.
"Roar, roar, roar!"
