The dark clouds flew extremely fast, and soon overtook the convoy and arrived above the place where Bai Yuqi and they were staying.

At this time, everyone also saw clearly what this noisy dark cloud was...... Birds! All kinds of birds, large and small, gather into dark clouds!

This "bird cloud" is composed of a variety of large and small varieties of birds, the small ones are no more than the size of a fist, and the large ones even have a wingspan of three or four meters, just like the legendary Dapeng birds!

Not only the sky, but also the dust raised on the horizon indicated that something was coming, but it was not moving as fast as the flying birds, and it was not clear what it was for a while.

But as the sun gradually rose, the strange convoy arrived in front of Bai Yuqi and the others.

The same are bamboo trucks, except that those with long wagons are powered by animal power compared to those with steam engines.

And the peculiar thing is that the trailer animals are strange, there are "six dislike" takins that are bigger than cattle, and there are also "four dislike" serows that are similar in size to donkeys.

There are also various kinds of cattle, horses, donkeys, deer, antelope, musk deer, roe deer, muntjac...... There's even a fat boar!

After all, the steam engine was complicated to process, and the number of masters who had mastered [metal dissolution] and [shaping] was limited, and the output of natural steam engines was limited.

Being able to supply the needs of all departments is already the result of the hard work of these craftsmen in the past few months.

Bai Yuqi, who had already drawn out all the steam trucks that could be pumped out, had no choice but to use animal power to drive them first.

Fortunately, they plundered back a large number of cattle and horses from the Turkic steppe, and the number of these large animals was very abundant.

As for the takin and serow, as well as the antelope, the forest musk deer, the roe deer, the small muntjac and the wild boar, they are used to the fullest.

Anyway, they are idle in Zhongnan Mountain, if they don't want to eat and wait for death to become food livestock, then come out and work hard to earn money for themselves.

If it weren't for the bamboo rat pulling the cart, it would be a bit excessive.

Bai Yuqi couldn't wait for even the bamboo rats that were breeding in Kuyu City and were almost flooded with ropes to pull the carts.

He left for three months, and no one helped those bamboo rats hold a "sacrifice", and the disciples of [Shennongmen] did not dare to kill them if they raised them.

As a result, these bamboo rats who are full of food and sleep, and give birth to babies when they sleep well, are breeding and almost filling up the empty dormitories in Kuyu City!

So after Bai Yuqi went back, he held a "collective funeral" for the bamboo rats as soon as possible.

While relieving them, he also liberated the disciples of [Shennongmen] who were so tired that they vomited blood from the flooded bamboo rats.

Due to the next plan, Bai Yuqi needs to use a lot of manpower, and he really doesn't have time to serve these cute but edible rats, so he has to send them back to heaven first.

The "heroic sacrifice" of millions of bamboo rats is not worthless, after recruiting a large number of people to go into the mountains to organize funerals for bamboo rats.

Bai Yuqi obtained tens of millions of soul energy, and directly raised himself to [Level 1 and Level 8] in one go, and the upper limit of Arcanic Energy soared from the original 100+300 to 3300+3300×3, gaining a tenfold increase!

In this way, his spell-casting ability has once again returned from the embarrassing state of insufficient arcane energy after promotion to a state where spellcasting is no longer so restrictive, and coupled with the increase in the concentration of [arcane particles] in the Jungnam Mountain and Gyeonggi area, it is enough to cope with what he needs to do next.

The bamboo trucks, dragged by herds of large and small animals, were also modified, and the carriages were transformed into rows of lattices, filled with ...... made of hay balls Nest?

And the creatures that raised dust on the horizon finally revealed their true colors in front of the people who were watching...... There are chickens, ducks and geese all over the mountain, and it is impossible to tell how many there are for a while!

The Tang Dynasty couldn't help but be stunned, and subconsciously turned his head to look at Bai Yuqi.

Bai Yuqi didn't explain, just showed a smile, this is the biological locust extermination army he prepared for the locust plague!

After all, the thunderstorm convoy of artificial locusts can only attract and destroy large swarms of locusts, but it cannot completely exterminate all locusts.

Therefore, as long as the thunderstorm convoy arrives at each place and exterminates more than 60% of the high-density concentrated locust swarms, the task will be completed.

As for the remaining scattered locusts, it is impossible for the thunderstorm convoy to stay in one place for a long time, waiting for them to slowly gather and die.

Therefore, when the thunderstorm convoy swept all the way like a sweep, the remaining forty percent of the locusts could only be left to the people of Datang to capture by manual manpower.

But how much can people catch?

Before the next wave of locust waves form, if their numbers are not suppressed below the safety line.

Even if Bai Yuqi, a living immortal, was present, he could only look at the raging locust plague and was helpless.

Don't forget, 1,000 locusts can produce 62.5 trillion offspring in four generations, and that's not counting the number of newly bred locusts.

Therefore, in order not to have that kind of terrible scene, Bai Yuqi did everything, not only gathered the chickens, ducks and geese that were free-range in [Shennongmen], but even personally carried out a "combat mobilization" of the entire bird group in Zhongnan Mountain.

That's why they're now seeing this spectacular migration of birds.

As the sun rose, a large number of locusts hidden in the mountains and fields resumed their activity, and quickly gathered into large swarms of locusts flying all over the sky.

But unlike the previous days when humans could only look at the sky and sigh, the same overwhelming flock of birds slaughtered them, like erasers erasing the dirt on the canvas of the blue sky, and swept away the swarms of locusts.

And the flock of chickens, ducks and geese, which rushed by like a tide, rushed into the fields, and there were no locusts left in their pass!

Compared to humans who still need to bend down to catch locusts, these poultry are much more efficient in cleaning up locusts.

Looking at the poultry spreading on the earth like a tide, the Tang monarchs and ministers were stunned.

Because the chickens and ducks passed by, none of the locusts that were scurrying all over the ground could be seen, leaving only the ...... all over the ground !

The thick layer of locust carcasses that had been crushed to slag on the road was pecked clean by the poultry without any waste.

Birds are responsible for clearing locusts in the air, while poultry are responsible for clearing nymphs that are jumping all over the ground.

A large number of disciples of the [Imperial Beast Gate] blew a kind of sharp bamboo whistle to drive and guide the birds and poultry as if they were grazing.

And a large number of [Shennongmen] disciples followed behind to take care of the aftermath, turning the dirt and turning the messy poultry manure into the ground, this is a good natural fertilizer, don't waste it!