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The tea tree leaves on the Tanuki Mountain, sure enough, are a little rolled up, and when you open the rolled leaves, there is nothing in them, which is really incomprehensible.

Piece by piece, the tea trees are green and vibrant, and they don't look like diseases.

It's not a disease, it's an infestation, but I don't see any insects on the leaves, not even insect droppings.

The careful little Qiulan turned over the back of the leaf and found that there was something like rust on the back of the leaf.

She remembered what she had learned in biology class before, that there was a creature called a mite, which was invisible to the naked eye, but it did exist.

She told her master what she thought, and Zhang San gave a thumbs up appreciatively: "Clever! ”

It turned out that Zhang San had already seen that it was an insect infestation, and the master and apprentice got together to study what methods to use to kill insects.

In ancient times, there were no pesticides, but there were many natural poisonous weeds and poison ivy, which can also be killed by chopping them into juice and mixing them with some water.

Poisonous weeds and poison ivy that are highly toxic are rare, and those containing general toxicity are easier to find.

Zhang San asked everyone to find two kinds of poison ivy, chop them into juice respectively, mix them with water and put them in wooden barrels.

At this time, the water shot cylinder invented by Xiao Qiulan came in handy again.

Under her guidance, Wang Dali removed the defective products, and without much effort, he made four water shot cylinders.

The two of them sucked water in the waterfall pool and test-shot, looking at the mist sprayed out of the water injection tube, Wang Dali couldn't believe his eyes.

How could a little girl be so smart? Even this kind of magical thing can be thought of, no wonder the young master of the Li family will take a fancy to her.

The two took the water shot barrel and returned to the tea grove.

Zhang San and the others have already mixed three buckets of insecticidal water, one bucket is a mixture of two poisonous juices, and the other two buckets are a kind of poisonous juice.

Zhang San explained that these three buckets of different insecticidal water were shot in three places, and the one was selected to observe which one had a good effect.

If none of the three work, you'll have to find another poison ivy.

Zhang San smiled, he has cured many people for treatment, but it is the first time for him to treat plants.

The name of the ghost hand Zhang San, all the men who have been out of the mountain, have heard of it, coupled with the explanation of Second Uncle Yang, the villagers all know that Zhang San has strong martial arts, superb medical skills, and can snatch people from the door of death.

Knowing that he took his apprentices into the mountain to help them treat the tea tree leaf curling disease, many villagers took time out to come to the Tanuki Mountain to watch.

When they saw the miraculous water injection cylinder, which sprayed the mixed insecticidal water evenly on the tea tree leaves, their eyes widened in disbelief.

When they knew that the water shot cylinder was Wang Daniu's sister-in-law, and the Qiuqiu girl in front of them came up with it, they all gave Xiao Qiulan a thumbs up and praised it.

After Wang Da Niu shot three buckets of insecticidal water, the sun was about to set.

The group went home, but before they got home, Brother Feng, the son of Second Uncle Yang, was already waiting at the gate.

Second Uncle Yang's family slaughtered chickens and sheep, and worked hard for an afternoon, in addition to Xiao Qiulan's master and apprentice, he also invited Wang Daniu.

It was difficult to resist the enthusiasm, Xiao Qiulan and her master and brother-in-law followed Brother Feng to Second Uncle Yang's house.

The Yang family's house is very large, a bit like the Hakka Wailong House.

There are many families living in the Wailong House, and the second uncle Yang and his brothers, as well as the cousins and cousins who are close to them, all live together, which is very lively.

At dinnertime, in the huge hall, the men in the dragon house sat at two full tables.

Women and children filled the other two tables.