Leaving Caishen Town, Su Changkong returned all the way to Black Iron Villa.

The thirty pairs of Yiqi powder medicinal materials purchased were enough for Su Changkong to use for a period of time.

Su Changkong, who returned to the Black Iron Villa, did not delay, and practiced martial arts as always.

In the morning and afternoon, I practiced the Five Fowl Opera, practiced the sword technique during the day, and practiced the Turtle Breath Gong at night, and the time schedule was full!

A few days later, in the courtyard, Su Changkong practiced his knife technique!

Su Changkong stood still, and a breeze blew, causing the branches of the big trees planted in the yard to shake, and a leaf fell down.

"Poof!"

At this moment, Su Changkong opened his eyes suddenly, and the iron cutting knife on his waist came out of its sheath without warning, drawing a perfect arc and cutting through.

Laugh at!

The leaf split in two, and was shattered and scattered to the ground by a powerful force!

"This waist strike style is indeed very suitable for me, and it can be integrated into my iron slashing knife technique, which can make the threat of the iron slashing sword method to a higher level!"

Su Changkong's eyes lit up.

This waist strike style is learned from Yan Song, for the knife drawing technique, the main point is to charge the force, it seems to be not moving, in fact, it is like an arrow on the string, the knife has not yet come out of the sheath, it has entered the rhythm of the attack, abruptly out of the knife, one blow will kill!

Even if the enemy is extraordinary, prepared in advance, and blocks the must-kill blow, he will inevitably fall into a passive situation!

The difficulty of this waist attack style is not low, but for Su Changkong, whose potential value is as high as 12 points, it is easy to master, ordinary people need ten days and half a month to get started, and Su Changkong has a maximum of half a day and a day!

When practicing the sword, Su Changkong integrated the waist attack style into his iron cutting knife technique, which made the realm of the iron cutting knife technique advance by leaps and bounds, and it was only a matter of a short time to enter the realm of reaching the peak.

In the morning and afternoon, Su Changkong's cultivation of the Five Fowl Opera was equally rapid, and as the internal strength became more and more profound and the physical potential was developed, the progress of the Five Fowl Opera was very rapid.

As for the Turtle Breath Gong, the difficulty of cultivation is huge, supplemented by the dispersion of beneficial qi, and then use time to accumulate, practice diligently, and sooner or later you will be able to complete the breakthrough!

"What I'm missing the most...... Or money! ”

Su Changkong frowned darkly, this time the medicinal materials purchased in Shenzhuang were only enough for a month, without the help of Yiqi San, then Su Changkong's turtle breath skill would go further, and he would have to get more money in years.

Su Changkong's ability to make money is not slow, in the Black Iron Villa, his efficiency in building swords is second to none, and he can earn more than ten taels of silver a month, which is unimaginable for ordinary people, but for Su Changkong, who cultivates martial arts, it is a drop in the bucket!

"I want to make enough money in a short period of time, so I can't come in peace." Su Changkong understood this in his heart, "I helped the White Jade Gang build armor before, and I could earn a hundred taels a month, so I can start from this aspect......"

Su Changkong's eyes flashed with a different color, rare things are expensive, especially some things that have been banned by explicitly, they are even more valuable!

Like a sword, even if it has a good texture, the Great Yan Dynasty does not ban swords, and they can be bought anywhere, unless it is a real treasure sword, and it is impossible for a sword to sell for a sky-high price.

If Su Changkong created a set of armor and sold it, it would be better than the sum of ten or dozens of swords!

Of course, the premise is that it can be sold, Su Changkong has no intention of building armor and selling it, once he wants to create a set of armor, Su Changkong is alone, it takes too long, and it may take more than a month to create a set, and this thing uses too many materials, the cost is high, and it is easy to attract attention.

"I can build some 'crossbows' ......"

Su Changkong quickly had an idea in his mind.

In the Great Yan Dynasty, in order to prevent rebellion, armor was forbidden, and crossbows were forbidden.

Bows and crossbows, in which bows and arrows are not forbidden, but a good archer takes a long time to train, and it can take years to train a skilled archer!

But the crossbow is different, this thing is easy to operate, you only need to learn to pull the crossbow string, and then aim at the target and pull the trigger, and you can master the crossbow proficiently in a few days, and you can train crossbowmen in large quantities! The threat is too great!

Therefore, the decree of the Great Yan Dynasty forbade the armor crossbow.

The creation of armor consumes more materials, and the process is complicated, one person to build armor, even Su Changkong is time-consuming and labor-intensive, and the crossbow is more compact, it takes less time to build a crossbow than armor, but its value is not lower than armor.

Therefore, Su Changkong felt that he could build a crossbow and then find a place to sell it, and he should be able to sell it at a high price and use it for cultivation!

As for whether this would violate the laws of the Great Yan Dynasty...... It's good not to be known.

"Draw first!"

Su Changkong was resolute and immediately began to draw the manufacturing drawings of the crossbow.

There are many types of crossbows, such as Qin crossbows, Zhuge repeater crossbows, bed crossbows, siege crossbows, and so on.

Bed crossbows, siege crossbows, and the like are too huge, far more powerful than bows and arrows, and can pierce through gold and iron hundreds of paces away, but they are more complex to build, and require more time and materials.

Su Changkong was more inclined to the individual crossbow, and the manufacturing drawings of the Qin crossbow that he had seen in his previous life came to his mind, and he drew them with his hands.

It took several hours for a blueprint of a crossbow to appear in front of Su Changkong.

A single crossbow, its main structure is composed of crossbow arms, crossbow bows, bowstrings and other parts.

The materials are mainly wood with excellent flexibility, with metal, cowhide and other materials, these materials are not rare, but the manufacturing process is very exquisite, not ordinary people can complete, Su Changkong's forging has reached 5 realms, and it should be no problem to spend some energy!

As soon as he thought of it, Su Changkong immediately purchased some materials.

Wood Su Changkong purchased some sour jujube wood, as for some accessories and mechanisms of the crossbow, they are mainly copper, which is easy to get in the Black Iron Villa, and it is not difficult to buy the cowhide for making bowstrings.

After buying all the materials, Su Changkong quickly started to make it, the crossbow is a forbidden item like the armor, Su Changkong can only build it alone, and it can't be known by others.

The parts and mechanisms of the crossbow are extremely exquisite, which is the most important fundamental, and the technical content is very high, which ordinary blacksmiths cannot build at all, and they need to use a furnace to forge.

Su Changkong then found Director Liu and made his request to Director Liu: "Director Liu, I want to use the workshop in the evening recently, work overtime, and build more weapons......

He definitely couldn't make these parts in the workshop during the day, and needed to rest when no one was around, so he told Director Liu that he wanted to work overtime, build more weapons, and earn more money.

This is not in line with the rules, which makes Director Liu hesitate, but Su Changkong is the most skilled caster in Black Iron Villa, and he has never asked for a higher salary, his request is very weighty, and he can still mix well when he leaves Black Iron Villa with his ability! Of course, the Black Iron Villa also needs to do its best to meet his requirements and prevent him from leaving dissatisfied!