Teaching the slave soldiers archery and melee skills, Yang Wenli just took the time to do it, his main business is still engaged in scientific research, and no one can replace him at present, so he can only do it himself.

The research of optical glass, what lanthanide optical glass, he engaged in for a while, because he didn't know which is the lanthanide rare earth, after no achievements, he gave up decisively, mainly because he didn't have time, so he started to improve and purify ordinary glass, because there are traces to follow, so the progress is relatively fast, and remarkable results have been achieved.

Now he is trying to make a telescope, not a simple telescope like the West, of course, but binoculars that are more difficult to use at one time.

An excellent telescope has several technical essentials, first of all, the glass material, which Yang Wenli has trial-produced with a relatively high transmittance optical glass.

The second is mirror grinding, which includes convex lenses and prisms, and the key points of mirror grinding are abrasives and tools. The hardness of glass is very high, it can be said that there are few things that can grind it, in modern times, diamond is generally used, Yang Wenli of course does not have this condition, he used a five-level grinding process, coarse grinding with crushed quartz sand, the latter are rare, several rare earths with different thicknesses, soft and hard, he has been screened out after a short period of experiments.

Tools are only special, optical instruments are the most precise things, and the accuracy cannot be guaranteed by artificial, so only special grinding tools can be made, that is, manual mills.

If it was before, Yang Wenli would be helpless, but when he developed a relatively high-precision lost-wax casting process, there was a little hope.

The precision parts cast by the lost-wax method and then carefully polished to form a small manual mill are certainly much better than pure manual grinding. There are no particularly difficult parts, nothing more than precision screws and gears, as well as the two most difficult concave molds.

Yang Wenli, who has a holistic idea, works in an orderly manner according to the steps. "Shh Yang Wenli breathed a sigh of relief, and he finally assembled a manual ball mill.

Just as he was about to experiment, his personal servant Yang Liren came in and bowed to him and reported, "Great master, Liaodong has sent someone back." ”

"What......?" Yang Wenli, who was thinking about how to do the experiment, didn't react for a while, but then he said happily: "Okay! Call him in to me at once. ”

"Yes" Yang Liren immediately bowed again, and turned around and went out to give the order.

Yang Wenli's slave soldiers did not use the thousand-character text anymore, because the thousand-character text was not enough, so he used the three-character scripture to take another batch of names, and his own slave soldiers were the first fifty suitable characters of the three-character scripture.

Military salute is used when the official issuance of military orders, usually with bowing, Yang Wenli is constantly standardizing the etiquette of behavior, this, he intends to learn from the Japanese and Koreans, they inherited the Chinese etiquette of the Han and Tang dynasties, and China has been ruled by foreign tribes several times, some etiquette has changed.

First of all, etiquette should be respectful and spiritual, not too casual, like waving hands, it will not be very energetic, and it will be a little less energetic.

"The big boss, his subordinate is Yang Yiteng, the commander of the army under the command of Yang Renyu's small flag officer, and he was ordered by the small flag officer to come back to pick up the large army and go to Liaodong." Yang Yiteng walked up to Yang Wenli in high spirits and bowed.

"Big troops? Why? Didn't I tell him how many times I would go to Liaodong? Yang Wenli was very puzzled, so he asked him rhetorically.

"The small flag officer wants his subordinates to tell the big boss, there are too many checkpoints along the way, one time is okay, the officers and soldiers are not vigilant, there will be problems if there are too many, if you give up protection because of camouflage, the consequences are very serious, because the officers and soldiers have Hongyi artillery, the power is huge, a dozen pieces, people are flesh and blood, they can't bear it at all, it is better to break through with a large army." Yang Yiteng explained.

"Well......" Yang Wenli nodded in agreement, because even Yang Renyu, a pioneer, did not approve of going to Liaodong in disguise, which must be very risky.

Yang Wenli is an extremely cautious person, every soldier who has received his new military education is very valuable, and the Han people in Liaodong are too thin, too poor in physique, and gold-phobia, not suitable for being a soldier, in Liaodong, it is difficult for the army to replenish soldiers, so he doesn't do anything that is too risky, so he agrees with Yang Renyu's point of view.

"Big boss, this time I hired fifty ships ranging from 50 to 200 materials, and I am now waiting in Maoshan Chong." Yang Yiteng broke another news.

"Okay, I know, you go back to rest first, I'll send someone to call you if there's something." Yang Wenli immediately made a decision in his heart and said to him in a clean tone.

"Yes," Yang Yiteng bowed again, then turned around and went out.

"Someone, help me call Chief Flag Officer Yang Rentian." Yang Wenli shouted at the door, and at the same time issued an order.

This is the merit of Yang Wenli, he is never indecisive in doing things, and once he decides, he will implement it immediately, which is an excellent quality that a superior must have.

The herald found Yang Rentian on the playground, and he was training his 25 slave soldiers to slash and slash three moves. So in a short time they returned.

"Big boss" Yang Rentian bowed to Yang Wenli and saluted.

"Rentian, this evening, you will lead the officers and soldiers of your general banner to Maoshan Chong to garrison, where fifty boats are waiting for us.

This time the situation has changed, and we must go to Liaodong with a large force, because we only have one chance.

Bring all your personal equipment, as well as other household items and medicines.

Once you go, you don't know when you'll be able to come back here, let the soldiers and their families stay longer, and you can go and disband them right away. ”

Yang Wenli didn't talk nonsense, and directly issued several orders to him, and in the end, his tone couldn't help but be a little sad and nostalgic.

"Obey the order," Yang Rentian immediately stood up and made a chest-beating salute in response.

The distance is too far, and the sea is turbulent, and the woman can't stand this kind of suffering, so she can't take her family to Liaodong. It is very cruel to say, this is not a task, but a passing year, some people may become goodbye forever, thinking of this, Yang Wenli felt a faint pain in his heart.

He also has a family, and the concubine matchmaker is still pregnant, and he can't even see the child born. Thinking of this, he didn't care about the experiment anymore and went straight home.

Of course, Yang Wenli will not go to Maoshan immediately, he still has to develop a few things, the telescope is the same, and the other is a ballista, it was originally best to be a cannon, but he did not have the raw materials for gunpowder on hand, such as the saltpeter that was used in the largest amount. Therefore, I had to develop a relatively simple, but equally powerful cannon, which could at least compete with the court sailors remotely, instead of being blindly beaten.

He knows the power of the cannon better than anyone else, and he is worthy of being the king of war, especially on the water, he can't dodge, so the casualties will be so big that he can't stand it.

…… To be continued