......

"The sword master realm is not so easy to break through...... Mu Wanqing sighed lightly, "Sword master sword master, kendo master." After the pen "Fun" Pavilion www.biquge.info advanced to the realm of sword masters, it was enough to open the museum and accept apprentices. This was an important watershed moment, and most sword practitioners could not cross this threshold. ”

Ou Chuyang asked in surprise: "Why? Isn't the realm breakthrough all accumulated and natural, is there any trick?"

"There's no trick, it's just accumulation. However, the accumulation of sword qi alone is not enough, it also needs to be understood. ”

"Perception, what do you feel, how do you perceive?" Ou Chuyang asked, the sword master was his next target, and he just took the opportunity to ask Mu Wanqing clearly.

"You can only understand it, but you can't say it. No one can teach you, it's all up to you. Mu Wanqing then said some of her experiences, "I've tried for a long time, but I don't have a clue. I feel that breaking through the sword master requires not only the accumulation of kendo cultivation, but also a thorough understanding of heaven and earth, life, and the avenue of swords. Retreat and meditation are not enough, you also need to go to more places, experience some things, and accumulate experience. ”

"It's better to travel thousands of miles than to read 10,000 books, what you said makes a lot of sense. Ou Chuyang said: "Then I'll go and say goodbye to Di Zhenjie and accompany you on a long trip." ”

Mu Wanqing said: "Don't worry, I haven't hit the bottleneck yet, let's retreat and cultivate for a while." ”

"Okay, I'll do some preparation first. ”

......

After casting a treasure again, Ou Chuyang had an idea. Although the method of electrolysis of water to produce oxygen combustion is simple and effective, the purification effect of black steel is no longer satisfactory to him. In the future, if you want to smelt higher-grade sword materials, I am afraid that it will become more and more overwhelming. While you still have a little free time, you should find a way to find a more effective solution.

It is better to be prepared for danger in times of peace than to be temporary. With such a mentality, Ou Chuyang went to the Fang Market in Jinghai City and bought back dozens of raw materials for "scientific experiments".

"Boom!" There was a loud bang, and the entire Meixin Hall and several surrounding mansions shook violently.

Mu Wanqing raised her sword in her hand, rushed out of the room, and saw that the entire courtyard was shrouded in thick black smoke, and hurriedly asked, "What's the matter!"

"It's okay, it's okay...... It's me working on a new fuel recipe......" Ou Chuyang grinned at Mu Wanqing innocently, and his face, which was smoked into black charcoal, showed two rows of white dangling teeth.

Mu Wanqing chuckled, immediately straightened her face again, and said, "Researching fuel, I almost blew up the house." Is such a dangerous thing a child's play?"

Ou Chuyang rubbed his hands and said apologetically: "I was negligent, I didn't expect the fuel to explode......"

"You're not hurt. Mu Wanqing said and stepped forward to carefully inspect Ou Chuyang's physical condition.

"I'm fine, I'm just scared. ”

"And said it's okay, it's all black charcoal. ”

"Huh?" Ou Chuyang hurriedly reached out and touched his head, "It's okay, the hairstyle is not messy." ”

......

Under Li Fuquan's repeated explanations, Ding Zhuang, the city guard, and his neighbors, who rushed to defend the city after hearing the sound, dispersed in a panic. Ou Chuyang stood alone in the courtyard, looking at a small pinch of black coarse sand in his hand.

He had just mixed a new fuel called "thunder sulfonate" into the earth-fire source crystal and toner. Thunder sulfur sand is produced in the Thundering Gorge, which is named after the thunderous roar that erupts all year round.

Ou Chuyang knew: In the process of refining pills for a long time, the ancient alchemists in China discovered that the mixture of nitrate, sulfur and charcoal could burn and explode, thus giving birth to gunpowder, one of the four great inventions of ancient China.

There is also black powder in this world, which is widely used in the development of mountains and rocks, and the production of firecrackers and firecrackers. The explosion just now was definitely much more powerful than black powder.

Could it be that he developed a new type of explosive by accident? Ou Chuyang became interested and continued to experiment with his scientific research results. Of course, he moved the test site to the barren mountains outside the city to avoid accidents.

"Boom!"

"Boom!"

"Bang!"

......

After more than 100 violent burns or explosions, Ou Chuyang found two formulas:

One is: 40% earth fire source crystal, 50% carbon powder, and 10% thunder sulfur sand can increase the temperature in the furnace by 10% again under the help of oxygen. The purity of the black steel smelted from this has increased by three percentage points to 81%. In this way, the quality of the sword he forged will be greatly improved again, although it is far from being comparable to the best treasures, but it is much better than ordinary treasures.

The other is even more amazing, fifty percent of the earth fire source crystal, two percent of carbon powder, and three percent of thunder sulfur sand are mixed together, and under the support of oxygen, an extremely terrifying and violent explosion is produced. The entire furnace was blown into splinters, shooting in all directions, and several large trees around it were shot into sieves.

Looking at the "crater" at the explosion site that was several feet deep, Ou Chuyang was also secretly frightened: the power of this "explosive" is estimated to be almost catching up with ******* explosives.

In addition to being able to ignite and explode, explosives can also be detonated when subjected to a violent impact. Ou Chuyang took out the previously cast Pogang Fist as a container to continue the test. He sealed the mixed explosives in his fist and filled it with a little oxygen, then dropped it off the hill.

"Boom!" "Boom!" "Boom!" "Boom!...... The sound of the explosion reverberated in the valley, and the experiment was successful! Ou Chuyang was very satisfied with the results of the experiment and felt that he was qualified to win the Nobel Prize.

......

With the new fuel formula, the treasures produced by Mei Xintang are naturally more sought-after, and the order in Li Fuquan's hand is enough to keep Ou Chuyang busy until next year.

On this day, Ou Chuyang personally sat in Meixintang to receive big customers from afar.

"Master Mei, my master wants to ask you to go and forge the sword in person, so that we can communicate at any time. "The person who came was dressed like a housekeeper of a large family.

Although the other party proposed to ask Ou Chuyang to cast a treasure artifact at a high price of 200,000 spars, he still refused, "I never provide door-to-door service." ”

"It's a bit of a tough requirement. The butler smiled and said, "But my master has a lot of ideas about this sword, and he needs to communicate in person to make it clear." If Master Mei is willing to make a trip in person, my master is willing to pay an extra 100,000 spars. ”

"Let's go, then. Ou Chuyang immediately got up. Just kidding, 100,000 spars are already more than the value of a treasure, such a good money, it would be a fool's hat not to make it.

Ou Chuyang said a few words to Mu Wanqing and Li Fuquan, and rode out of the city on a fast horse.

The fast horse galloped for a day, ran 800 miles, and arrived at Jinghai City at sunset. The housekeeper took Ou Chuyang straight to Guanhai Tower, "Master Mei is tired, my master has prepared a thin wine to catch the wind and wash the dust for you." ”

Guanhailou is built near the sea, with beautiful scenery and elegant environment, and is the most famous restaurant in Jinghai. Ou Chuyang followed the housekeeper into the private room facing the sea on the third floor.

......