The time for two planes is too long, and Anjie is not sure, but it is more than enough to use the shortened time to make one more.

Su Yu: "If you're sure you can do more without compromising the quality of the machine, make a catapult first, and if there's time left, make more replacement parts for later." ”

The reason for choosing to prioritize the production of catapults is very simple, because catapults consume nearly countless stone warehouses, but the crossbow arrows consumed by the city defense crossbow are made in blue, which requires a lot of time and materials.

Moreover, the catapult production time is also an hour shorter than that of the city defense crossbow, so that the time will not be too tight.

In addition, it is necessary to prepare replacement parts.

Because he didn't know the scale and specific situation of the beast tide, Su Yu was not sure that this beast tide would last for a few days.

But even small beast tides have three days, medium ones start from five to seven days, and large ones start at ten days, and there is no upper limit.

The use of these things for three days of continuous rotation, not to mention that the machinery will not be tired, but the wear and tear of the internal parts must be very serious, and it must be replaced in time at that time, and the use of parts cannot be saved, otherwise the end is that the entire machinery will be scrapped.

"Yes, I understand, in addition to parts, I will make a few more maintenance kits......" An Jie understood what Su Yu meant, and immediately said that he would do it, and at the same time prepared some things on his own.

A repair kit is not a literal toolbox, but a tool that can continue to increase the durability and wear of machinery over a period of time.

Among them, durability affects the use of machinery, and wear affects the quality of machinery, the difference between the two is similar to whether there is a mobile phone with electricity and a mobile phone with hardware aging and often stuck.

"Yes, it's best if you can make a repair kit." Su Yu was very satisfied that he was able to think about what items he needed to prepare.

"By the way, if you can, the lord can find a few people who are interested in machinery, let them come and study for a while, I don't dare to say anything else, at least I can guarantee that they will all have the most basic mechanical maintenance at that time!"

"No problem, by tomorrow morning at the latest, people will be arranged to go to the machinery shop." Su Yu recruited people for the machinery shop, not only to make the fault tolerance of the beast tide more high, but also because she felt that there were many work procedures in the territory that could actually be prepared to be gradually mechanized.

The use of physical labor as human power is always the last option, and the most valuable resource of human beings should be their brains with thousands of ideas, not their physical labor.

If you want to mechanize, the first thing that will stop the mechanization process is the problem of manpower, so Su Yu is not only ready to recruit people, but also to recruit a few more talented people.

After all, if you have no talent, unless you have this adventure like An Jie, you will not make any progress in mechanics in this life, and you can only do miscellaneous work for a lifetime at most, which is unnecessary.

……

……

So far, all preparations for the pre-Beast Tide have already been carried out.

In addition to the items and props that need to be prepared, Su Yu also issued an announcement to organize a group of people-

Although there is still a period of time before the beast tide, the manpower must be prepared in advance, otherwise if it is taken by surprise, it will definitely be too late to organize the manpower by then.

If there is a very small situation, such as this incident does not imply a beast tide, it doesn't matter, Su Yu can still take this group of people to solve this matter.

Anyway, this incident clearly requires combat effectiveness.

While organizing people, Su Yu also began to look everywhere for ways to perfectly protect people without being discovered.

This search is two days......

……

The past two days have seemed to be peaceful, nothing has happened, and even the beasts that had been restless during the Season of Inspiration have gradually disappeared.

However, this is not only not a good thing, but it also verifies the arrival of danger, and in Su Yu's opinion, all this is just the calm before the storm.

In two days, Al Ain's construction progress reached 90%, and according to his plan, it is expected to be completed by noon tomorrow.

An Jie's mechanical production progress is only one catapult at the last time.

Canglan even stopped what he was doing, handed it over to the apprentices around him, and built a thousand large-scale crossbow arrows with great lethality in two days.

These thousand crossbow arrows, plus the crossbow arrows that Su Yu had asked her to make in her spare time before, totaled 3,300 pieces!

This amount looks like a lot, but it's actually not much.

Five city crossbows, which on average only had more than 600 arrows per city crossbow.

Using Doya's consumption in the Dark Creature battle as a reference, she had consumed two quivers, a full hundred arrows, in less than half an hour.

Of course, the use and lethality of a large machine such as a city-defending crossbow cannot be compared with that of a human bow, but the number of arrows consumed per hour is at least one hundred and twenty, which is equivalent to two per minute.

More than 600 sticks are enough to use for less than six hours.

Therefore, it is inevitable that there are not enough crossbow arrows, but it doesn't matter, because the city defense crossbow can also use ordinary arrows as ammunition, but because the ammunition does not match, ordinary arrows cannot enjoy the attribute bonus of the city defense crossbow when attacking.

However, a city defense crossbow that can only fire one large crossbow arrow at a time can fire at least five ordinary arrows at a time!

As the number of arrows increases, the attack range increases, the damage increases, and the accuracy decreases, the durability cost of the city defense crossbow decreases, and the wear and tear increases.

According to the cost-effective data specially tested, the most cost-effective is to fire ten ordinary arrows at the same time, this number of arrows has a large range, high damage, and the accuracy will not deviate too much, and the durability and wear rate of the city-defending crossbow itself are not particularly fast.

There are numbers to compensate, and even with no stat bonuses, the Defender Crossbow can still use normal arrows, thus making it a huge role in battle.

As for the large crossbow arrows, they were prepared by Su Yu for the 'Beast Boss Battle' in the future.

The beast leader here does not refer to fighting with a beast leader of the status of the Black Snake, but fighting the beast with the deepest pollution, the greatest degree of erosion, and the strongest combat effectiveness among the pollution.

Fighting against this kind of beast boss, ordinary arrow damage is not enough, especially without the attribute bonus of the weapon, it is easy to even break through the opponent's defense.

So at this time, crossbow arrows come in handy.