The Nine Heavens Divine Thunder has a remarkable origin.
This Thunder Magic was passed down from an ancient Immortal Sect and was discovered by disciples of the West Sea Sect while exploring the Nine Dragons Land Palace. It is divided into three parts, upper, middle, and lower, corresponding to the three great realms of Purple Mansion, Golden Core, and Nascent Soul.
The Nine Heavens Divine Thunder is extremely rigid and positive, belonging to the pure Yang Thunder Magic, and is limited to male cultivators' practice. Moreover, its vast depth makes it exceedingly difficult to master.
After obtaining the Nine Heavens Divine Thunder, the West Sea Sect did not list it among the Sect's true Dharma Techniques. Thus, Wang Chen was able to acquire it in the Scripture Pavilion. Otherwise, with his current status, he would not have been able to access such a superior spell.