Miss Sun saw that everyone was there, but she didn't say much. She said to Murong Feng and Kang Wansheng: "Two elder brothers, you can go to the competition tomorrow, don't think too much about other things." I've got some eyebrows here. Tomorrow's game will be over, and everything will be known. ”

When everyone saw Miss Sun, they didn't say anything, so they had to give up, and secretly guessed in their hearts what Miss Sun had in mind.

The sun said to Chu Duyun and Granny Xuan Bing again: "Aunt Xuan Aunt Chu, you two come with me, I have something important to discuss with you." ”

Everyone is even more suspicious. After the three of them entered the secret room in the back, they began to discuss. However, no one can say why. They had to rest separately and wait for the last game of the next day: the artillery battle.

Speaking of this artillery battle, it is extremely important for water warfare. Ships sail on the sea, and the most effective means of attacking each other is with artillery. And the troops on the shore also need to use artillery to attack the incoming enemy at sea. One of the cannons has a long range, and the other has great lethality. Far more useful than bows and crossbow machines.

Last time, Du Wu and the others used fire to attack and severely damage Suwon Saner's fleet in Nanban Port, which was a special case. In general, the fleet fights in the sea, and fire attacks are ineffective. And artillery battles are extremely important. Whichever side has strong ships and good guns, which side will be able to gain superiority in naval warfare. Therefore, this artillery battle, as the last item of this great contest, is also the heaviest. It can be said that the artillery battle accounts for more points than the first three combined. Therefore, whoever can win in the artillery battle has a high probability of becoming the final victor and thus gaining the right to marshal it.

Early the next morning, Murong Feng and Kang Wansheng brought people to the beach, and the venue for the artillery battle was also near the dock. The artillery battle was divided into two parts. The first part is an attack on a target at sea with artillery on the shore, which is scored by the range and the number of targets hit.

The second part is to be held on board, when the ship is sailing at high speed, it must hit some moving targets at sea according to the regulations, and the number of targets hit within the specified time is used as the scoring standard.

This project is the one that Murong Feng and Kang Wansheng have practiced the most these days. Because we all know the importance of this project. The cannon they used was designed and manufactured by Chu Duyun himself. The materials used are also the best cold iron and Ugin. Just because Chu Duyun was the imperial builder of the East China Sea Kingdom before, all the high-grade metal materials of the East China Sea Country belonged to her. It is also because of this that she has created many artifacts and won the first place on the blacksmith list. This is something that Vukosong is completely incomparable. Wu Kesong wants to build weapons for Du Wu, and he also has to go to the mountains to look for meteorites. Chu Duyun is different, a large number of divine materials, as long as she is willing to use them, she can use them in large quantities at any time. And the East China Sea is also rich in cold iron. This cold iron was originally produced in the East China Sea, and many weapons and equipment can be crafted from cold iron. This, together with the ancient capital of the Western Xinjiang Kingdom, which was the imperial builder, could not be compared with Chu Duyun. Because the Western Frontier Country does not have so much cold iron.

The advantage of Re Gudu was that he could use Pure Yang True Fire, which was stronger than the ordinary furnace fire used by Chu Duyun. But his position on the blacksmith list was still not as good as Chu Duyun's. It can be seen that good materials are important to a blacksmith.

This cold iron is used to make cannons, and it has a natural advantage, and the general cannons cast by iron cannot be fired continuously, and will explode due to overheating. Cannons made of cold iron are different, and even if you fire hundreds of cannons in a row, the chamber will not overheat. That's the beauty of Cold Iron.

Chu Duyun built dozens of cannons for Shenshuimen. This time, they were all shipped to East Star City. Chu Duyun personally adjusted it and made some improvements, so that the range and accuracy of these cannons were greatly improved. She named these cannons "Cold Iron Town Sea Cannons". specially taught Murong Feng and Kang Wansheng how to use it.