Sea Quelling Bizarre Treasures usually had their own unique uses. Although the first Sea Quelling Bizarre Treasure Han Fei refined looked like a knife, its characteristics were that it could transform into any weapon.
Han Fei's original intention was to use the Divine Demon Vine Grass leaf for Yin'er's defense. Therefore, when refining it, he didn't add any other abilities, but meant to use it mainly for defense.
When Nian'er woke up from the epiphany, Han Fei didn't give her the two things directly, but said, "Why don't you try disassembling spiritual energy now?"
Nian'er seemed to have some insights about it and disassembled spiritual energy for seven days in a row. In the end, her disassembling degree fell to 68%.
Han Fei thought to himself, I didn't reach such a high level at the beginning. After all, Nian'er is only a junior Explorer, and her disassembling degree is enough.