The eighth Heaven Crushing Technique, Dark Dao Particle, was not only imbued with the purest heaven crushing power but also the supreme dao intent related to birth and destruction. It created destructive force by drawing upon the origin of dao, thereby resulting in a destructive output that was many times more superior to that of the other Heaven Crushing Techniques.
As such, that technique was known as the most devastating of the Heaven Crushing Techniques!
The Ancient Dragon Empress didn't dare to use it as it was extremely difficult to unleash and required vast amounts of energy expenditure. Furthermore, it was far too fearsome and could easily hurt innocent beings. If she weren't careful, she could unintentionally wipe out all of the living beings in an entire city or even a small country.
An Lin didn't have such qualms as everyone within a radius of thousands of kilometers were enemies.