Early in the morning, Tang San returned from the mountain, feeling refreshed and invigorated. He had been using the Purple Extreme Magic Eye every day, and his morning cultivation had also been continuous. Compared to before, the Purple Extreme Magic Eye had already made significant progress, and his eyes could now clearly see the subtle movements of mosquitoes flapping their wings within a range of ten meters. If it weren't for the fact that his Xuan Tian Gong hadn't broken through its bottleneck, Tang San believed that his progress in other areas would have been even greater.

  It was impossible to forge a piece of raw iron into the size of a fist, but Tang San had already accomplished it half a month ago. Tang Hao taught him the technique of borrowing force to use his hammer, and he could continuously strike twenty-four hammers, each one accurate and without error, including control over his strength. Although Tang Hao never praised him for anything, from the occasional satisfied glances his father gave him, Tang San knew that his hammering skills were somewhat accomplished, and if he wanted to progress further, it would still depend on constant practice.

  Just as he was about to enter the house, Tang San lightly touched his wrist and a satisfied smile appeared on his face. On his wrist was the first piece of work after coming to this world, and it was all done by himself.

  That was a sleeve arrow, and for the original Tangmen, sleeve arrows were the most ordinary type of mechanical hidden weapon. The key to making a sleeve arrow lay in the power of the mechanism and the cleverness of its design. Like the sleeve arrow made by Tang San, it even had a safety device, with no possibility of accidental injury.

  A set of sleeve arrows, generally consisting of three arrows and a sleeve tube, the one Tang San is wearing on his hand now is no exception. And the material of this sleeve arrow is precisely that piece of raw iron he spent nearly a hundred days hammering out.

  When Tang San completed the task given by Tang Hao and forged the pig iron into a fist-sized piece, he was shocked to discover that the original impure pig iron had turned into a piece of Iron Mother, a true Iron Mother.

  In the previous life, not to mention him, even if it were the best casting master of the Tang Sect, they would never have used this method to forge ordinary pig iron into an Iron Mother. But in this world, it had become a reality. This was already an extremely unbelievable thing. And the sleeve arrow on Tang San's wrist was precisely made from that piece of Iron Mother. Completing the manufacture of the sleeve arrow, including the three four-inch small arrows inside, used up all the Iron Mother.

  When it comes to casting, Tang San is not good at it and far inferior to Tang Hao. But when it comes to manufacturing ingenious hidden weapons, let alone Tang Hao, I'm afraid that in the entire Douluo Continent, there's no one who can surpass this genius of the Tang Sect's outer sect.

  Ordinary sleeve arrows, Shè Cheng generally around fifteen meters, while Tang San manufactured out of the sleeve arrow can maintain effective attack distance thirty meters away.

  The so-called effective attack distance refers to the straight-line distance after the sleeve arrow is shot out, that is, the distance that can maintain sufficient lethal force.

  Tang San's sleeve arrows, although only three in number, were made with extreme precision. Each sleeve arrow had three blood grooves on it. If not for the limited quantity, he had once considered adding a reverse hook to the arrowhead of the sleeve arrow. The small four-part tail wing at the rear allowed the sleeve arrow to fly extremely stably. The conical arrowhead had spiral markings on it, and when the sleeve arrow was shot out, it would have even stronger penetrating power.

  For the design and manufacture of hidden weapons, Tang San has always pursued perfection, even if it's just a ordinary sleeve arrow.

  Tang San knew that he was still young and his Mysterious Heaven Technique had not broken through the bottleneck. If it were an ordinary person, he wouldn't be afraid, but if he encountered a Soul Master like Su Yun Tao who could use his Soul Skill, his strength would be far from enough. However, with this sleeve arrow, things would be different. Tang San was confident that as long as the opponent's strength wasn't too powerful, he had a way to deal with them.

  ……

  Tangmen Xuantian Treasure Record, General Outline, Article 2: What are hidden weapons? Hidden weapons refer to special weapons used in secret to defeat the enemy. If the enemy already knows you plan to use it, then it is no longer a hidden weapon, but an open one.

  ……

  Tang San would never let his hidden weapons become open ones, and Tang Hao had never asked him what he used the Iron Mother for, so this sleeve arrow was a secret that belonged to him alone.

  As he walked into the house, a savory aroma wafted up to his nostrils. It was something he did every day and had long since gotten used to.

  "Dad, dinner's ready." Tang San called out to the inner room.

  Surprisingly, Tang Huo, who would normally come out every day at mealtime, did not appear today.

  Tang San's heart suddenly tightened, could it be that his father was ill? He hastily ran into his father's room in three strides.

  Tang Hao was not in his room, and it seemed like he hadn't slept in for years.

  Just as Tang San was wondering what Tang Hao had gone to do, Tang Hao returned.

  "Little San, where did you go this morning?" Tang Hao asked faintly.

  Tang San said: "I'm going out to exercise. Every morning I will go out for a run." This can't be considered a lie, he indeed went 'exercising'.

  "Hmm." Tang Hao didn't press the issue, and said lightly: "You don't need to practice casting today, pack up your things. Tomorrow Old Jack will take you to Nording City."

  Tang San was taken aback, "Noding City? What for?" The last time he went to Noding City was probably about a year ago, when Old Jack went into the city to buy some things and took him along to broaden his horizons.

  Tang Hao looked at him and said, "Don't you want to learn the abilities of a Soul Master? Old Jack will take you to Noding City's Primary Soul Master Academy as a work-study student. There, you'll be able to learn what you want."

  After hearing his father's words, Tang San's heart suddenly accelerated, and an indescribable excitement surged up in his mind. The inability to break through the Xuan Tian Gong had always been the biggest knot in his heart, and the Soul Master's soul ring was apparently an opportunity.

  "Dad, why did you change your mind?"

  Tang Hao retorted: "So are you going or not?"

  Tang San said: "But if I go, no one will cook for you." At this time, he already understood that his father got up so early today to find Village Chief Jack.