Lao Zhu stored all the sulfur saltpeter that he could collect here, and also produced and stored thunderbolt bombs here, which was the kind of simple grenade designed by Ma Du.

Lao Zhu's craftsmen are really not enterprising, it's been almost two years, and the thunderbolt is still the same, without the slightest improvement.

"You can't see open flames in this place, or you'll be beheaded!" Zhao Desheng instructed Zhao Dashan and Zhang Wuliu again, "You two have to remember, when the rules are broken, neither of us can protect you!" The two of them nodded in fright.

Later, Ma Du and Lao Zhao went up to the courtyard wall, which was almost three feet thick, better than the adobe walls of some small cities. Standing on the courtyard wall, the wind and grass in the courtyard can be seen clearly, and the view is also wide, as long as someone within a few hundred meters is close to see it, it will be immediately discovered.

"With such a courtyard wall, plus three hundred elite soldiers guarding it, even if two thousand people come, they can withstand it for three days!"

"Brother Zhao, you are really worried, where can there be two thousand enemy troops who can run to the sky, it is already good to have ten or eight secret agents, I am afraid that they will not be able to pass the secret posts on the periphery."

"That's right, haha...... I always think that one day I can fight with people again, I'm afraid that there is no hope in this life. Lao Zhao's expression was full of loneliness.

"There's no way to get another one for that cut off waist, but I didn't just say that there is a good way to strengthen your body, I'll teach you another day. Don't dare to say it, at least you don't have to wrap a fur in spring before you dare to go out. ”

Zhao Desheng grabbed Ma Du's wrist, "No need to change the day, teach it now!" ”

Tai Chi and yoga are both good ways to strengthen the body, Tai Chi is more suitable for regulating the internal organs, and yoga is more focused on strengthening the muscles and bones.

Coincidentally, these two Ma Du will be, grandpa wants him to accompany him to practice Tai Chi, and Sichuan sister wants him to accompany him to practice yoga. However, he still prefers to practice yoga, especially when he and Chuan Meizi can take leave to go out.

Lao Zhao is obviously used to fighting on the battlefield, the soft and natural Tai Chi was beaten by him fiercely and mightily, his arms were waved out with the sound of the wind, his beard and staring eyes were a little hideous, as if the enemy army in front of him was killing with a knife, Ma Du saw that his heart trembled. If such an expression and posture are drawn on paper, it can definitely replace Wei Chi Jingde and become a new generation of door gods.

"Brother Zhao, the most important thing in this Tai Chi is gentleness, otherwise it will not have the effect of conditioning the body, you don't think that you are in the battle array, and what you have in your hand is not a knife...... Close your eyes and imagine that when these two hands are pushed out, it is like pushing the cradle, and inside is a very small baby whose life is fragile......"

Zhao Desheng closed his eyes and muttered softly, "Cradle...... Baby...... Hey! ”

Looking at Lao Zhao's strength, the baby is afraid that he is about to fly into the sky, but the effect is still there, Ma Du didn't hear the sound of the strong wind coming out of the sleeves this time.

"Brother Zhao, imagine that this is when Zhao Xian was a child." Zhao Xian is Zhao Desheng's eldest son, and now Lao Zhu's pro-army is a hundred households, and he just gave birth to a grandson to Lao Zhao last year.

"Cradle...... Baby...... Zhao Xian...... Hey! ”

Ma Du vaguely heard the wind again, and this Zhao Xian was not biological.

Practicing Tai Chi is not an overnight thing, and it takes a long time to persist after learning, and Ma Du is not in a hurry, so let Zhao Desheng slowly experience it.

At noon, he dealt with a little casually in the Firearms Bureau, and went home to eat and sleep at night, Zhao Desheng didn't have this benefit, who told him to stay away from home, and the Firearms Bureau really had to be on duty as a military commander.

Meals at home have changed, and there is no longer just dried fish and chunks of pork. Big fish did not treat Chang in vain, at a young age, he was already able to take care of the house in an orderly manner, the quality of life was greatly improved, and he was very virtuous to arrange a maid for his brother.

Although they can't be the master of their brother's marriage, there is no problem with a maid in the room. Mrs. Chang said that continuing the incense is the most important thing in a man's life, and Xiao Yuer and water chestnut also hope that their brother will give birth to a big fat nephew soon.

It's a pity that this Nizi doesn't understand her brother's mind, and the maid she arranged for her has big breasts, thick waists, and big buttocks, saying that such a woman is easy to give birth to. This was all secretly told to her by Mrs. Chang, and for this reason, she specially asked Mrs. Chang for this maid named Tiger Niu.

Ma Du felt a shadow hanging over his yard, and the name of this shadow was Madame Chang. He rejected Da Yuer's good intentions, saying that he would not get close to women in a short period of time, and that he would focus on his career and contribute to the prince's conquest.

"My brother is really an upright and motivated person!" Ma Du's impression in the heart of the big fish immediately rose a few points.

I heard that Ma Du moved into the big house, but there were few people in the family, the palace, Li Zhen's family, Tang He's family, and Song Lian's family all sent servants, Song Lian is a great Confucian, and the servants sent are different from other families.

Everyone sent cooks, grooms, maids, servants and so on, but Song Lian sent a scholar to Ma Du, who couldn't make beds and fold quilts, and couldn't serve tea and pour water, but he was quite good at reading, Ma Du didn't need him, so he handed him over to the little turtle.

What satisfies Ma Du the most is the fat cook given by Li Zhen, who made a good Huaiyang dish, which made Ma Du feast, but this cook ate too much and didn't like the second grandfather.

Ma Du had to ask Zhang Wuliu to carry a food box every day when he went to work, which was brought to Zhao Desheng. The food in the Firearms Bureau is not bad, and you can eat meat every day, but the taste is really worse.

Lao Zhu knew Ma Du very well, he didn't plan to let Ma Du manage specific affairs, but just hoped that he could come up with some new tricks, so he sent a deputy to take charge of specific affairs.

This person's name is Jiao Yu, and the fire dragon spear is from his hand, before Ma Du appeared, he was naturally Lao Zhu's first expert in firearms, and now he can only take a back seat.

Ma Du does not despise it, in this era, a person who can design a qualified gun pipe is not a genius, it is also a master. After Ma Du and Jiao Yu exchanged a few times, he found that he was really knowledgeable in firearms, and he even talked about the concept of rocket artillery.

However, with the current level of industrial technology, the rocket made is at most a large sky-rocketing monkey, and I don't dare to expect any accuracy, and it would be good if it didn't shoot into my own camp.

He didn't have the vision to travel through time and space, and he didn't know that the tubular firearm that used gunpowder to trigger projectiles in hundreds of years was the king, but he was already a rare talent to think of the concept of rocket artillery.

To make firearms is to have this kind of forward-thinking thinking, and Mado believes that every firearms expert has an extraordinary imagination, so that they can push the limits again and again, and finally create weapons that are enough to destroy the earth.

Ma Du got along with Jiao Yu quite happily, as for the other person who often went to the Firearms Bureau, he almost didn't disgust Ma Du to death, and Ma Du, who had always made good connections, didn't expect that there would be one more enemy of life and death.