Fortunately, the ghost willow wood in his hand was a Yin attribute spiritual wood. After being made into a coffin, the Corpse Bear would enter it and innately breathe in the Yin energy from the ghost willow wood, slowly increasing its strength.
It was equivalent to being in a place with rich Yin energy, which is the same principle as cultivators seeking spiritual veins for cultivation.
Of course, using this clever method to cultivate the Corpse Bear is naturally not as good as cultivators who specialize in this path.
In addition to this, Zhang Ling also purchased a lot of demon beast's flesh and blood. Devouring blood food is also a way for the Corpse Bear to increase its strength.
This included the flesh and blood of several high-level demon beasts. This cost him a lot of spirit stones.
Zhang Ling also dissected the Earth Armor Beast in Elder Chen's storage bag, and all the flesh and blood of this beast was devoured by the Corpse Bear.
Previously, he was busy breaking through to the Golden Core stage himself and had no time to care for the Corpse Bear, so he sealed the Corpse Bear in this five-thousand-year-old ghost willow wood for more than twenty years.
At this time, he did not know how strong the Corpse Bear was. Now, in order to refine a secret technique, Zhang Ling planned to release the Corpse Bear.
He estimated that the Corpse Bear had at least advanced to the fourth rank.
With these thoughts in mind, Zhang Ling pinched a magic seal in his hand and began to cast a spell. As streams of yellow spiritual power entered the ghost willow wood.
The gray-yellow spiritual light on the ghost willow wood continuously condensed. After a few moments, Zhang Ling lightly shouted.
Suddenly, the ghost willow wood shook violently, and a thick crack appeared on it.
Then, with a loud bang, the ghost willow wood split in half and fell to the ground.
In a cloud of smoke and dust, a monster about ten feet tall appeared before his eyes.
Its body creaked and twisted a few times, as if it was very stiff.
As it opened a pair of emerald green eyes, a layer of thick Yin and cold power emanated from its body.
Seeing this, Zhang Ling flipped his hand, and a black long-necked jade bottle was thrown towards the Corpse Bear.
The moment the black jade bottle appeared, the Corpse Bear seemed to sense something, stiffly turned its body, and faced Zhang Ling.
The jade bottle flashed and arrived above the Corpse Bear's head, then with a bang, it burst, spilling a stream of bright red liquid, scattering it on its body.
These liquids were the blood of high-level demon beasts. For a time, the surroundings were filled with a strong bloody aura.
Roar!
Immediately, the Corpse Bear roared excitedly, its Yin energy and corpse energy condensed, forming a small vortex, and sucked the blood into its mouth.
After absorbing the blood, the Corpse Bear's body swelled up again, and its originally somewhat shriveled face became full.
Roar roar
Its aura became even more condensed.
Hehe, as expected, its strength has reached the fourth rank, and it is even stronger than I imagined.
Seeing this, Zhang Ling laughed softly, then with a thought, the Corpse Bear faced his direction, its emerald green eyes flickering, seemingly with a different kind of aura.
Roar!
Then, the Corpse Bear's figure flashed and pounced towards him, the purple-black stiff hairs on its arms exploded all at once.
Hmph!
Zhang Ling snorted coldly, waved his hand, and a ball of yellow light flashed, shooting towards the Corpse Bear.
With a loud bang, the Corpse Bear's figure had just leaped into the air when it was covered by the yellow light and slammed heavily on the ground.
This was the Heavy Yuan Profound Light that Zhang Ling had cultivated. After breaking through to the Golden Core stage, its power had also greatly increased. A Foundation Establishment cultivator would basically have no chance of escaping if they were covered by it.
But now the Corpse Bear inside was howling, and a layer of gray-white corpse fire was rising from its body. It seemed to have some resistance ability.
Zhang Ling narrowed his eyes and began to cast a spell. He first opened his mouth and spat out a circle of essence blood, which turned into some blood-colored runes and entered the Corpse Bear's body.
This is the Soul Control Curse, used to control the Corpse Bear.
These spiritual puppets need to be re-refined every once in a while, otherwise there is a possibility of rebellion.
In the world of cultivation, there are some cultivators who have been killed by the backlash of their spiritual puppets.
Especially after these spiritual puppets advance and their strength greatly increases, they will basically rebel at the first opportunity.
Thus, after a quarter of an hour, Zhang Ling regained control of the Corpse Bear.
If he was still a Foundation Establishment cultivator, it would probably take at least two days to regain control.
Then Zhang Ling opened his mouth and spat out a circle of light yellow essence, and his hands flew quickly, forming hand seals.
As he cast the spell, the light yellow essence turned into strands of silk, and these strands of silk flashed and surrounded the Corpse Bear.
With a thought from Zhang Ling, the Corpse Bear opened its mouth wide and spat out a ball of gray-white corpse fire the size of a fist.
He controlled the yellow silk threads while casting spells to control the Corpse Bear again, so that it would cooperate with him in cultivating the Yin Sha Silk Secret Technique.
For a long time afterwards, Zhang Ling was cultivating the Yin Sha Silk in the quiet room.
It was not until a few months later that he initially condensed a dozen strands of Sha Soul Silk.
This secret technique is very difficult to cultivate, after all, he is not mainly cultivating ghost path cultivation methods.
The Yin Sha Silk he condensed was hidden on the Corpse Bear to maintain its power.
He also tested the power of the Sha Soul Silk. Although his cultivation was so-so, this secret technique was really insidious, and the power to defile magical artifacts was indeed not small.
A top-grade magical artifact, entangled by two or three strands of Yin Sha Silk, would immediately have its power greatly reduced.
If it were defiled by more than ten strands of Yin Sha Silk, it could immediately destroy a top-grade magical artifact.
Zhang Ling also tested the black gold shield magic treasure in his hand, and it could also be defiled, reducing its power.
Based on the Yin Soul Silk he has condensed so far, it may not be enough to completely release it and defile a magic treasure.
But it can also reduce the power of a magic treasure by two or three percent in an instant. As long as he wholeheartedly cultivates this secret technique in the future, once the number of Sha Soul Silk reaches dozens or even hundreds of strands, it will definitely not be difficult to defile a magic treasure in a short period of time.
However, Sha Soul Silk is not invincible. To directly destroy a magic treasure, it would probably take a huge amount of Sha Soul Silk.
As long as a cultivator uses Dan fire(丹火: Pill Fire) to refine the Yin Sha Silk that has contaminated the magic treasure, they can restore its power. However, this is difficult to do in the heat of battle.
Being able to do this is enough. If other people's magic treasures are weakened, then his chances of winning will greatly increase.
This technique is insidious, but it wins by surprise.
Unless, he concentrates on cultivating this technique for more than ten years and condenses a large amount of Sha Soul Silk.
But doing so is naturally not his intention.
Moreover, he only has one Corpse Bear, and its strength is limited, and its corpse fire is not endless, so it naturally cannot meet the requirements of this endless condensing of Sha Soul Silk.
An important reason why he stopped cultivating this technique at this moment is that the Corpse Bear was somewhat unable to bear it.
The Yin Sha energy on a Corpse monster with the strength of the late Foundation Establishment stage is only enough to condense a dozen strands of Sha Soul Silk.
Of course, Zhang Ling will constantly cultivate the Corpse Bear. If it can advance again, then it can become an assistant to him.
However, Zhang Ling can only think about this kind of idea, as it is so difficult. He can only look for other opportunities.
In addition to cultivating Sha Soul Silk, the spiritual herbs in the medicine field have also mostly matured. Zhang Ling is starting to refine pills again.
He is now a Golden Core early stage cultivator, and there are only a few pills suitable for him. He chose two of them, one called Ninghua Pill, and the other called Diyuan Pill.
Ninghua Pill and Diyuan Pill are both treasures among third-grade pills.
In addition, the Heavy Yuan Pill(重元丹: Chongyuan Pill) that is fully compatible with the Qian Tu Gong cultivation method can also support his current cultivation.
