However, beautiful scenery cannot be retained. As time goes by, everything slowly returns to its original pale and deserted appearance.

“So beautiful!”

"yes!"

Both of them sighed, but the flower fairy sighed for the fleeting beauty, while Jiang Feng put all his attention on her.

After the two returned to the castle, most people had already gotten up. The transaction would continue today. The most important thing about this kind of thing is the beginning. After succeeding once, Ji Yun's resentment towards Jiang Feng and the others disappeared completely.

What she took out yesterday was only half of the rainbow stones in stock. The mountain they occupied was a huge mineral vein with a large number of gems.

Zhongli also understood that yesterday's transaction was just a test. The most obvious thing was that Ji Yun did not take out anything like crystal cores. Humans have very few ways to use crystal cores. It would be a miracle if there were any effective ways to use such a gathering place.

After Jiang Feng came back, he asked Zhongli to continue purchasing rainbow stones. He has now raised the value of rainbow stones to the level of strategic resources, so it doesn't matter how many there are!

"Okay! Just watch me!" Zhongli said confidently. After yesterday's communication, she roughly understood Ji Yun's personality. She was the kind of person who would only respond to tough situations and not soft ones.

After arranging this matter, Jiang Feng went to eat some snacks and prepared to rest. After all, he stayed up all night last night. Although he was not very tired physically, he was a little exhausted mentally.

The flower fairy was very excited and immediately began to design a new type of rune shell. This was her favorite job and what she was best at.

Due to the special nature of ruby, the runes must be carved by manpower, so the first thing she did was to change the flame rune, because she planned to leave the preliminary carving to technicians, who were much more skilled in this kind of work than Jiang Fenghe and herself.

The modified flame rune was missing some parts in some aspects. This was for the sake of safety and confidentiality. She and Jiang Feng had the same idea about the rune, that is, such an extremely important thing must never be known to others.

But now most of the runes were discovered by Jiang Feng bit by bit. The results of such boring work should not be cherished too much!

After completing it, she directly handed the task over to the technicians, asking them to carve runes on the rubies. Ten points would be awarded for each completed ruby, and the waste from failed carvings would be used as energy for the portable furnace.

Jiang Feng had basically asked Anna to open up these rights to her, so launching this task went very smoothly.

It should be mentioned here that the internal communication system has been greatly improved through continuous improvements by technicians and researchers, and there are several means of communication alone.

The first is the electronic system throughout the castle and its ancillary buildings. Basically, every certain distance there is a metal box that integrates a speaker, camera, and microphone. All places in the castle are under Anna's control.

The second type is a radio transmission system specially designed to serve combat team members. It has a long communication distance and high confidentiality of communication data.

As for the third type, it is a terminal that ordinary people can use. Most of these machines are improved from collected mobile phones and computers. As long as they are within the range of the castle data coverage, most information exchanges can enter the school.

The castle's task publishing platform is here. Basically all tasks can be found on it. After confirming her identity, Anna will post the tasks that need to be posted here, and the points will be settled after completion.

This system took a lot of time and effort to create, but after the system was completed, the work efficiency of everyone in the castle was greatly improved.

After handing this task over to the technicians, the Flower Fairy began to design the rune shells, because the original rune shells not only had explosive effects but also had powerful discharge capabilities. After replacing the energy crystals, this was no longer designed the same way as before, so this time she planned to change the technology.

Using the discharge principle of the electromagnetic gun, the shells are charged before firing and take effect directly after firing.

The principle of electromagnetic gun has long been analyzed by researchers. It only needs to install the original discharger inside the rune cannon, and then change the internal structure of the cannonball to make it easier to carry current.

The last step is to set up a trigger device, and use the machine to complete the runes on the ruby ​​at the moment of impact, and then successfully detonate the shell!

If this design is successfully completed, not only can the use of energy crystals be greatly reduced, but the use of secret gold can also be greatly reduced!

However, it was much more complicated to make than the original rune cannonball. The flower fairy worked from morning to afternoon before she finally completed the design of the internal trigger device of the cannonball.

By the time Jiang Feng came over, she was almost exhausted. It is not easy to design a high-speed firing shell. If there is no absolute certainty that the shell will explode inside the barrel, it would be a big problem.

"Okay, you take a good rest, and leave the rest to others! I will also go to help." Jiang Feng felt a little sorry for her. This matter should be left to the researchers.

"Um"

The flower fairy can only be obedient now. She has completely lost her temper in front of Jiang Feng. This is probably a kind of taming.

After Jiang Feng talked to her again, he sent her back to rest. Then he took the design drawings and design plans left by the flower fairy to the research building to find professionals to help him complete the task.

This task went very smoothly among the researchers. Because of the number of people, Jiang Feng directly separated the different tasks and then conducted research separately, which made the progress much faster.

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