Doomsday courtyard begins to survive by planting pea shooters

After a big battle, the courtyard was in a mess.

The ground is full of pits, including "large pits" made by Xiao Jian's digging of earth and rocks, and basin-sized punch pits formed by giant zombie attacks.

There are a lot of soil and twisted iron horses scattered on the ground, like some unknown post-modern artwork.

The broken and sharp iron pipe fragments were scattered on the ground, just like the iron caltrops used in ancient times to protect people and horses - it is a hidden weapon with four spikes, one of which always points upward, which is roughly equivalent to a modern police tire breaker.

Fortunately, these sharp debris are not so sharp and are difficult to penetrate thick-soled sneakers, otherwise Xiao Jian's soles would suffer.

And further away, Xiao Jian worked hard for many days to build the parapet.

The front battlefield of the entire courtyard is 12 meters wide, and the parapet is naturally the same width.

It may not seem like much, but you must know that the lanes on the highway are only about 3 meters wide.

12 meters is equivalent to 4 lanes.

After experiencing the ravages of giant zombies, this "four-lane" wide frontal battlefield has become jagged and full of gaps, except for a few scattered parapets.

Like an old lady with all her teeth missing...

What Xiao Jian wants to strive for is to delay the opponent's attack and lengthen the number of rounds of the battle to give him more time to output.

As long as the frontal battlefield is not completely blocked, monsters will sneak in if there is a slight gap.

And as long as a monster gets in, it can be said that Xiao Jian's life begins to countdown.

Instead of waiting until the last moment to knock down the monster, the best way is of course to keep the enemy outside the country.

How can we defend ourselves?

It would be easier if the entrance to the frontal battlefield was not 12 meters wide, but 1 meter wide - just build a heavy iron wall 1 meter thick, and it would be difficult for even giant zombies to break in.

But the problem is not that simple.

Defense area, defense strength and resource card consumption are an impossible triangle.

The larger the defense area, the lower the strength of the defensive buildings. And the defense strength also needs to be increased, which will consume a lot of resource cards.

The zombies Xiao Jian faced were getting stronger and stronger, and the short parapet was still effective in defending against ordinary zombies, but now its performance had obviously begun to fall behind.

Not only the breastwork made of iron piles and stones, but also the cheap and affordable Tiejuma, which can seal the entire frontal battlefield with only one resource card, it is time to withdraw from the stage of history.

While thinking about it, Xiao Jian casually refreshed the "Sacred Scripture" and couldn't help but reveal a wry smile when he looked at another person who wanted to exchange gold for a "God-given Heroic Spirit".

The refresh of "Sacred Scripture" is a bit too random... It's strange that the transaction efficiency can be higher!

No wonder the previous tribe was unable to exchange for any servants until its demise. This was purely due to the refresh mechanism of this "Holy Scripture".

After swiping a few times but not seeing what he wanted, Xiao Jian looked towards the courtyard gate again.

Facts have proved that iron reinforcement is still very useful, which is why most modern buildings use reinforced concrete.

But the problem is, Xiao Jian can't buy cement.

I would definitely not consider exchanging it with resource cards. After all, cement is a deeply processed industrial product and is not a single substance. If you exchange it directly with resource cards, the quantity will be very small. Building a five or six meter breast wall will be enough to reach the sky.

Therefore, Xiao Jian concluded that cement is far less cheap, affordable and labor-saving than Tiejuma.

Otherwise, upgrade the material?

Xiao Jian took a look at the exchange ratios of various alloys. The good news is that whether it is stainless steel, titanium alloy or even tungsten carbide, the exchange ratios are exactly the same.

The bad news is that the exchange rate is too low. An ordinary-sized titanium alloy iron horse requires 30 resource cards.

Like cement, deep-processed materials such as titanium alloys have greatly reduced exchange rates.

So after thinking about it, Xiao Jian's cheapest and most practical materials turned out to be just stones and soil!

"Tsk, it would be great if I could get cement instead..."

Xiao Jian couldn't help but browse the "Sacred Code" again, and the result was still a demand for exchanging valuables for "God-given Heroic Spirits".

So far, after Xiao Jian refreshed so many times, he has roughly classified these needs.

Most of them are for buying "God-given Heroic Spirits", and a small part are for various kinds of food.

A large part of the rest is arms trading, and then there are some messy, normal or abnormal niche needs.

As for building materials? Never seen it once.

Maybe it's because the value of these things is too low, maybe they think no one will lack such things...

"……Why."

Xiao Jian sighed and stood up from the "Holy Code".

In the narrow sky surrounded by a wall of fog, the night sky was deep blue and the moonlight was beautiful.

But there were no stars or clouds in the sky.

If Xiao Jian had never seen the sky and the earth repeating themselves and the sun and the moon rotating, he might have thought that all the clouds in the sky fell to the ground and turned into mist.

But now he even has some doubts, is the sky outside the patio... really the sky?

Regarding this issue, Xiao Jian only scratched the surface and did not dare to think deeply about it.

If you have to dig into the corner when you encounter an unsolvable problem, you will soon collapse.

So the first priority now is to solve the problem.

"Well……"

Xiao Jian couldn't help but look at the [Windmill Clover] he just got.

Tomorrow, go to the three-story office building to see if there is anything else that can be used?

Or use it to exchange for building materials such as cement?

Anyway, this kind of servant can only be used once after being summoned. Compared with the cards such as pepper incendiary bombs or temptation mushrooms that either clear the field or control the field, the windmill clover seems to be of little use.

Compared with the office building adventure that is destined to yield little, Xiao Jian thinks more and more that it is more cost-effective to exchange it for cement directly.

Thinking of this, Xiao Jian did it.

He directly put the [Windmill Clover] into the card slot on the left page of the "Holy Book" and set the exchange requirement of "10 cubic meters of cement".

10 cubic meters of cement is about 30 tons. Xiao Jian remembered that an uncle in their village built a two-story new house and used 25 tons, so he felt that 30 tons was enough, and there was no place to pile more.

The night is still long.

Xiao Jian got up, strolled around the small courtyard, and tidied up a little.

During this time, he also went to the location of the previous "ancient tomb" to take a look.

Since it got dark, the tombstone of the "ancient tomb" disappeared.

When the tombstone disappeared, the "ancient tomb" also disappeared...

There was no tomb chamber, no stone steps, only an ordinary pit, and traces of zombie gravediggers digging with their hands could even be seen on the pit wall.

As Xiao Jian had guessed before, the tombstone was a necessary condition for maintaining the existence of the "ancient tomb". When the energy on the tombstone was exhausted, the "ancient tomb" would naturally disappear.

After a circle, Xiao Jian returned to the plants and lay down.

He didn't know if there would be new attacks tonight, but he still had to sleep, otherwise he would not have the energy to work tomorrow.

It was another night with the sky as a blanket and the ground as a bed.

It was uncomfortable...