The beast soul of the Heaven-Swallowing Python is also known as a beast spirit. Obtaining the beast spirit grants access to the Heaven-Swallowing Python's innate ability: a divine sense attack.
Armed with a divine sense attack, and paired with his own Divine Sense that surpassed others of the same realm, he could undoubtedly elevate his strength to new heights.
In fact, not just for Lin Chuan, but for anyone, a divine sense attack was an extremely precious trump card.
Chapter 495