He fell off a cliff but unexpectedly gained a cultivation inheritance.

Having explored the entire secret realm and memorized the distribution of all resources, Zhang Bufan didn't waste any time. He turned and strode quickly towards the wooden house. At this moment, his steps were light and swift, and the slight flow of spiritual energy within his body subtly dispelled the fatigue of the journey. This was the direct benefit brought about by the transformation of his physique after embarking on the path of cultivation.

Back in the cabin, Zhang Bufan closed the door behind him, shutting out the sounds of the babbling brook and the soft rustling of falling peach blossoms, creating a tranquil space for his cultivation. He walked to a futon in the corner and sat cross-legged. Instead of immediately closing his eyes and circulating his cultivation technique as usual, he took out two oval-shaped spirit stones, each about the size of an egg, from his pocket. These two spirit stones were milky white, with smooth and warm surfaces; they were the ones he had carefully chiseled from the outer stone wall when he was exploring the secret realm.

As his fingertips lightly traced the surface of the spirit stone, a faint yet pure spiritual energy seeped into his fingertips, giving Zhang Bufan a slight boost of energy. The basic cultivation knowledge left behind by Daoist Xuanqing instantly surfaced in his mind, corresponding to the spirit stone in his hand. "This should be a low-grade spirit stone," Zhang Bufan murmured to himself, a knowing glint in his eyes.

According to the information I remember, spirit stones are the most basic and precious cultivation resource in the cultivation world. They are divided into four grades: low-grade, medium-grade, high-grade, and top-grade. The higher the grade, the more terrifying the density of spiritual energy they contain, and the value increases exponentially. These two low-grade spirit stones in front of me are already an excellent aid for Qi Refining stage cultivators. They can not only greatly accelerate the cultivation progress, but also be used to activate some low-level protective or spirit-gathering formations.

Zhang Bufan looked up at the cave ceiling outside the wooden house, where countless milky-white stones, larger and more dazzling than the spirit stones in his hand, were embedded. He thought to himself, "Those spirit stones above, with their brighter light and larger size, must be mid-grade, high-grade, or even top-grade spirit stones. The spiritual energy they contain must be much purer and more abundant." However, he quickly suppressed his covetousness. For him, who had only just entered the first level of Qi Refining, low-grade spirit stones were already sufficient. The spiritual energy contained in high-grade spirit stones was too violent; with his current meridian strength, he simply couldn't refine them directly. Forcing their use would only damage the foundation of his meridians, a complete waste of resources.

He clearly remembered that, according to his records, the density of spiritual energy in a spirit stone increased by about a hundred times for each higher grade, while its actual value was far greater, often reaching over a hundred and twenty times. Moreover, it was in high demand and short supply in the cultivation world; even low-grade spirit stones were considered treasures by ordinary Qi Refining cultivators. Thinking of this, Zhang Bufan couldn't help but clench the spirit stone in his hand. The fact that the secret realm contained such abundant spirit stone resources was undoubtedly a tremendous opportunity for him.

Without further hesitation, Zhang Bufan held one of the spirit stones in his right palm, letting his left hand hang naturally. He then slowly closed his eyes, focused his mind, and began to circulate the Qi Refining chapter of the "Mysterious Purity Dao Inquiry Technique." As soon as the technique began, the low-grade spirit stone in his palm seemed to be awakened, and the spiritual energy within it began to slowly permeate into his body along the meridians of his palm.

Unlike absorbing the sparse spiritual energy in the environment, the spiritual energy within spirit stones is not only pure but also possesses extremely high fluidity, rapidly circulating along the meridian pathways guided by the cultivation technique. Each time it flows through a meridian, a portion of the spiritual energy is refined by the technique, transforming into his own spiritual power and merging into the vortex of energy in his dantian. The entire process is incredibly smooth, without the slightest sense of stagnation.

Zhang Bufan carefully sensed the changes in the spiritual energy within his body and quickly made a clear comparison in his mind: the spiritual energy gained from cultivating with the help of low-grade spirit stones and circulating a complete cultivation technique was more than ten times that of simply meditating and absorbing the spiritual energy of the environment!

"Ten times! Ten times more!" This discovery sent a wave of overwhelming joy through Zhang Bufan's heart. His previously closed eyes snapped open, filled with barely concealed excitement. He had been worried that with his mixed five-attribute spiritual root, even with the abundant spiritual energy of the secret realm, it would take a long time to cultivate to the Foundation Establishment stage, establish a master on his storage ring, and leave. But now, with the help of low-grade spirit stones, his cultivation efficiency had greatly increased, and the time it would take to leave the secret realm and reunite with his parents would undoubtedly be significantly shortened!

After the initial excitement subsided, Zhang Bufan quickly calmed himself, closed his eyes again, and immersed himself entirely in cultivation. The spirit stone in his palm continuously released spiritual energy, which flowed into his meridians like a trickle of water. After being refined by his cultivation technique, it merged into the dantian's qi vortex, gradually making the vortex more solid and powerful.

He was completely unaware of how extravagant it was to use spirit stones to directly aid daily cultivation in the current cultivation world. For the vast majority of ordinary cultivators, spirit stones were strategic reserves, only used in small quantities at crucial junctures when breaking through cultivation bottlenecks or when they needed to quickly recover their mana after battle; otherwise, spirit stones were primarily used as hard currency to exchange with other cultivators for precious resources such as pills, cultivation techniques, and magical artifacts.

Zhang Bufan, however, was different. He possessed the entire secret realm's spirit stone resources, ranging from low-grade to top-grade, so he had no need to worry about consuming them and could squander them as "fuel" for his daily cultivation. This was the unique advantage of having a celestial master and occupying a celestial secret realm—an opportunity that countless cultivators dreamed of but could hardly attain.

Inside the wooden hut, Zhang Bufan was enveloped in a gentle aura of spiritual energy, and the low-grade spirit stone in his palm gradually dimmed. He was immersed in highly efficient cultivation, oblivious to his surroundings, focusing solely on the circulation of his cultivation technique and the refining of spiritual energy. With each rotation of the qi vortex within his dantian, it solidified further, and his spiritual energy increased accordingly. Time in the secret realm remained tranquil and undisturbed, and Zhang Bufan's path of cultivation, aided by the spirit stone, was progressing steadily at a speed far exceeding that of ordinary people.