It seems like a useless thing

  The flying sword that Jiang He had chosen was a jet-black, non-reflective flying sword stuck at the edge of the sandy ground. Compared to those gleaming flying swords, this sword looked very ordinary and was even stuck at the edge, generally not a choice for cultivators. However, Jiang He just happened to like black-colored swords, looking very cold and unapproachable.

  For this suspicious flying sword, Jiang He didn't dare to refine it into his own life-bound flying sword. If the flying sword had been tampered with, the consequences would be unimaginable. And if he couldn't refine it as his life-bound flying sword, it would also be difficult to bring out its full power. Thinking this way, Jiang He didn't have too much expectation for this flying sword, just being able to use it was enough.

  "Junior brother, how's the flying sword you chose?" Zhang Ziyang asked.

  "It's a bit strange, can't see it." Jiang He said.

  Among the flying swords, a first-class flying sword can emit a sword glow after being infused with spiritual energy. A second-class flying sword has a flowing light on its body after infusion. A third-class flying sword can produce a large illusory shadow on its body after infusion. A fourth-class flying sword's shadow can leave its body after infusion. A fifth-class flying sword can store spiritual energy in advance, and a sixth-class flying sword each has its own divine ability. However, this flying sword did not react at all when Jiang infused it with spiritual energy.

  "Let me take a look." Zhang Zi took the flying sword and examined it for a while, but couldn't figure out anything. He then smiled and said: "There are two possibilities here. One is that this flying sword is of poor quality, and the other possibility is that you, my junior brother, have picked up a treasure. Try refining it to see."

  "Refining? Isn't that too slow? If the refining time is too long, won't it delay your trip to retrieve the Nine-Curve Jade Lingzhi, Brother Jiang?" Although Jiang He was very curious about the material of this flying sword, he thought the timing wasn't right and smiled instead.

  "I'll pass on a Blood Refining technique to you, Brother Disciple, which will allow you to quickly refine it." Zhang Ziyue smiled and said.

  "Blood Refining?"

  "Not bad, just need to add a drop of fresh blood and it will be refined immediately, Brother Zhang, listen carefully." Zhang Ziyu uttered a mysterious incantation, Jiang He couldn't understand it, but he remembered it completely in his mind. This is one of the benefits of being a cultivator, never forgetting what you see or hear.

  Jiang He's fingers slid across the black sword, effortlessly drawing out a blood groove. Immediately after, he recited that incantation. Indeed, the blood moved, and was actually absorbed by the black sword. Jiang He felt joy in his heart; this Blood Refining Technique was indeed effective. From now on, even if he obtained another flying sword, he could use it immediately.

  Feeling the waves of blood rushing into the Black Sword within his body, Jiang He asked: "Senior brother, how much blood does this Blood Refining Flying Sword need to absorb?"

  "Just one drop will do. No, hurry up and take your hand away!" Zhang suddenly discovered that the wound on Jiang's hand had unknowingly enlarged a lot, and blood was actually flowing out with a "plop" sound.

  "I can't get it off, it's stuck on me!" Jiang He was losing too much blood and his head started to spin.

  "Clang!" Zhang's small tower in his hand smashed onto the black sword, causing it to shake violently. Jiang He took advantage of the opportunity to loosen his grip on the sword. However, he had exhausted a lot of energy. Just then, within Jiang He's internal organs, a powerful surge of vital energy suddenly flowed out, circulating throughout his body. It was the remaining medicinal power of the Purple Spirit Fruit. As this energy washed over him, Jiang He felt his weakness completely disappear, and even his body seemed to have become stronger.

  "What a close call! I didn't expect you, my junior brother, to have such great luck and actually pick up a Dao instrument that can grow with you." Zhang Zixin said enviously.

  "What is a Dao instrument? Isn't a treasure instrument only divided into Fa instruments, Ling instruments and Bao instruments? How can there be a Dao instrument?" This black sword, after absorbing Jiang He's blood, had a bright and beautiful blood pattern appear on its body.

  "What is meant by 'Daoqi' is a weapon that can grow, and only constant growth is the Dao! Every time the master's cultivation increases by one level, the weapon will automatically upgrade by one rank. However, it requires the master to constantly nourish it with fresh blood."

  "This Dao instrument is so powerful, if it's fed from the first layer of Qi Refining, by the time it reaches Foundation Establishment, won't it be able to upgrade to a Treasure Instrument? Is this a big bug or something?" Jiang He exclaimed.

  "What's a bug?" Zhang Zixin asked.

  "Haha, dialect, means unacceptable. Just feel that this is too impossible." Jiang He smiled and said.

  "Of course it's not as simple as you think. Let's not talk about the ordinary sacrifices that are ineffective against the Taoist instruments. For a cultivator in the Qi Refining stage below the fifth layer, if they want to use fresh blood to sacrifice the Taoist instrument, they will definitely be sucked dry. This requires the person sacrificing the Taoist instrument to be at least in the sixth layer of the Qi Refining stage, and even when they reach the Foundation Building stage, it's only possible to upgrade to a spiritual instrument. And there are two more difficulties."

  "What two difficulties?"

  "The first is the enhancement of the boundary, which is more difficult than finding a good weapon. The second is that the Taoist instrument appears extremely rarely in the cultivation world. So far, it is known that the highest level of instrument upgrade is only three-stage spiritual instrument. Moreover, once the master of the Taoist instrument dies, the Taoist instrument will generally be destroyed as well. Cultivating a Taoist instrument to grow into a treasure instrument is far less cost-effective than directly refining a treasure instrument."

  "I still think a sword that can grow with me is better." Jiang He smiled.

  "Heh heh, my own sword, as long as I like it, that's all that matters. Since my junior brother's luck is so good, I'll draw one too." Zhang Zixin smiled and casually took out a dark green sword, looked at it and smiled: "Not bad, it's actually a fifth-grade artifact."

  "Congratulations, Master," Jiang He said with a smile.

  "En, Tong Xi. Let's go, once we reach the second floor, there will definitely be better things to come." The two of them walked forward, encountering many restrictions along the way. Jiang He noticed something strange - most of these restrictions were spiritual symbol attacks.

  "Could it be that the master of this Qianji Cave Mansion is also a Lingfu Master?" Jiang He thought to himself.

  The two of them turned to a higher ground, and Zhang Zijian looked into the distance and said: "Disciple brother, look over there, there is a temple hall, it should be where the transmission array is located. Unfortunately, we can't fly in mid-air, otherwise we could have flown directly over."

  "Yes, it looks close, but the road below is really bad to walk on. If we take a detour, it will take us more than half a day, and by then it will be dark." Jiang He said.

  "Not bad," Zhang Zizai nodded and said, "I'm worried that after dark, the danger will increase greatly. Be careful, there may be people who kill to steal treasures."

  "It's strange, we just came in and saw someone being eaten by a monster, how can we walk for so long without meeting anyone else? It's really suspicious." Jiang's heart moved, thinking of the person who died earlier.

  "There must be some spatial restrictions or illusions in this cave that separate people. In any case, we should be careful on the road below, perhaps there are others like me who have suppressed their cultivation to enter the first layer." Zhang reminded himself, but looking at his appearance, it seemed that he didn't put others in his heart at all.

  No wonder, as one of the top ten refining Qi period experts in Tianfeng Sect, Zhang Ziyu still had great confidence in himself.

  "Hey, it's true that we were just talking about this, and now someone has arrived." Zhang Ziyu suddenly sneered, and indeed, from behind them, two middle-aged cultivators appeared, grinning as they walked towards the two.