After sensing this unique characteristic, Tang San's breathing became rapid.
It's important to understand that even when absorbing a soul ring, the attributes it grants are one-time only. Regardless of how high the enhancements to physical qualities or attributes are, they only happen once.
Even if a Soul Master adds their first soul ring at level 10 and gains special attributes from it, such attributes acquired later in life generally cannot grow alongside the Soul Master's strength, unlike the inherent traits of their martial soul.
Unless the same type of soul ring is absorbed again later to further stimulate the same attribute, this attribute will never grow. This is why Soul Masters often follow a single specialization path, with only a few supplementary skills to cover blind spots in their abilities.
This is because mastering everything means being mediocre at everything. Even noble attributes like time and space require corresponding soul rings to cultivate. Otherwise, absorbing ordinary soul rings will only hinder the growth of these originally powerful attributes.
Tang San himself occasionally noticed that his toxins might be somewhat ineffective against higher-level Soul Masters. In battles against Soul Masters of the same level in the Great Soul Arena, he found his biggest issue was being completely unable to penetrate defenses; his toxins couldn't even invade the enemy's body.
However, due to Blue Silver Grass being widely regarded as a trash martial soul, Tang San couldn't do much about it. He could only privately lament that a trash martial soul was indeed trash, and even with the addition of powerful soul rings supported by his teacher's strong theories, its inherently weak nature couldn't be changed.
But now, the Man-Faced Demon Spider's poison improved even without absorbing its soul ring or soul bone. For Tang San, this undoubtedly opened the door to a new world.
Driven by desire, Tang San began devouring the flesh and blood of soul beasts. As he continuously used his spirit abilities and circulated the Mysterious Heaven Skill, Tang San could feel a force from the soul bone seemingly entering his body, slowly transforming his essence.
If Chen Ming were here to see this, he would instantly understand what was happening.
There was no other explanation—it was all due to the Mysterious Heaven Skill, the technique that endlessly became more versatile.
In the Douluo Dalu 5, Rebirth of Tang San, this ability was explored further. Upon arriving on the planet Falan, Tang San unlocked a unique potential of the Mysterious Heaven Skill, one he hadn't even discovered as a God King: the ability to devour bloodlines. Using this, he stole countless bloodlines from various races, blending them into himself and turning his body into an untraceable complex hybrid.
Although the energy level of Douluo Planet was slightly lower than that of Falan, which could nurture beings equivalent to level 120 (second-tier gods), Douluo Planet's ancestral bloodlines were not weaker and were possibly even stronger. However, due to the world rules of Douluo Planet, which manifested bloodlines as martial souls, there were restrictions in this regard. This is why Tang San's Mysterious Heaven Skill had never displayed its peculiar bloodline-devouring ability.
No one knew why an assassination sect possessed an orthodox Daoist internal cultivation technique. Nor did anyone understand why this martial arts-based internal skill could not only be cultivated into godhood in another world but was so profound that even God Kings couldn't modify or fully comprehend its mysteries.
Most importantly, no one could explain why this supposedly righteous Daoist internal skill inexplicably gained a sinister, demonic ability like devouring bloodlines.
Yet, the Mysterious Heaven Skill undeniably had this bizarre and inexplicable capability.
The Man-Faced Demon Spider's skull bone, after being modified by Chen Ming, already possessed the subtle ability to alter a Soul Master's bloodline. The operation of Tang San's Mysterious Heaven Skill undoubtedly accelerated this process. It successfully fused the essence of the bloodline with Tang San's essence, making it impossible to completely separate them. Without realizing it, both Tang San and Tang Hao failed to notice that Tang San's head was becoming sharper and his jaw structure subtly changed. The originally impure Blue Silver Emperor bloodline in his body, which had already been distorted by the haphazard addition of soul rings, was further infused with the traits of the Man-Faced Demon Spider, leading to massive changes in Tang San.
Greedily devouring the flesh and blood of soul beasts, Tang San consumed an entire thousand-year soul beast yet felt no satisfaction. He immediately began searching for soul beasts of even higher cultivation years.
At first, Tang Hao tried to dissuade Tang San, warning him not to lose himself to the power of spirit abilities. However, after Tang San explained the transformations in his body and martial soul, Tang Hao's attitude did a complete 180. He became more enthusiastic about killing soul beasts than anyone else.
This hunting forest wasn't large, and there were no ten-thousand-year soul beasts within it. It was a hunting ground geared toward low-level Soul Masters. Under the search of Tang Hao and Tang San, every thousand-year soul beast within the forest was slain regardless of its bloodline quality. Tang San then devoured their brains and internal organs.
As for other parts containing less energy or those that were more troublesome to eat, the father and son casually discarded them without any attempt to hide or clean up.
After an entire day and night of devouring, Tang San's clothes were stained red with blood, and a faint, lingering killing intent filled his gaze. His soul power had increased from level 32 to level 33, and both his physical fitness and martial soul quality had been further enhanced.
At this moment, Tang San examined his Blue Silver Grass and noticed that the veins in its leaves had undergone a massive transformation. The original vein patterns had become akin to spider legs, and its toxicity had intensified.
Feeling the power within his body, Tang San was exhilarated. At this moment, he realized just how pointless ordinary cultivation was. All his painstaking efforts over several months would only barely raise his soul power by one level. Yet by unleashing the abilities of his skull bone and devouring soul beast flesh and blood, he had gained two levels in less than two days.
Although Tang San understood that his advancement from level 31 to 32 was primarily due to accumulated efforts, his leap from level 32 to 33 was entirely thanks to the abilities of the skull bone.
After prolonged slaughter and devouring, Tang San and Tang Hao finally stopped. However, it wasn't because they were satisfied but because the hunting forest had been completely emptied of thousand-year soul beasts. The remaining hundred-year soul beasts were entirely insufficient to satisfy Tang San's hunger.
Tang San washed off the blood on his body in a stream. Although the stench of blood had permeated nearly every corner, no spirit beast dared to approach the area where Tang San and the stream were located.
Tang San's clothes were soaked with blood they were no longer wearable, so he changed into a fresh outfit.
Gazing at his reflection in the stream, Tang San felt as though something about him seemed off. However, immersed in the satisfaction brought by devouring and with the changes being subtle, he dismissed it as overthinking.
He didn't notice at all that beneath his hair, his head had become slightly sharper, and the proportions of his mouth had undergone faint changes.