Blood sacrifice!
The Seashell Fairy mentioned these two words, and Ye Tianchen had heard these two unreliable sources, Little Zhu Yan and the God Beating Bowl, mention it before. Some Divine Runes and Formations require a blood sacrifice to be activated or broken. The concept of a blood sacrifice is not difficult to understand; simply put, it involves using living beings to make offerings to a specific gap in a Divine Rune or Formation, allowing it to be opened. Even when some powerful Treasures are being refined, a blood sacrifice is needed!
