After leaving the castle, Li Yu first took out the map and checked the direction he was going to go next.

The map was drawn by himself, because the boss did not allow Li Yu to transcribe it, so Li Yu took a picture with his mobile phone, and then drew it in his notebook after returning to the room.

Except that there is no statue of the goddess of the silver moon and no coloring, there is basically not much difference from the original.

However, according to Fausto, this map is also hundreds of years old, and some places are not so accurate, but Li Yu has no better choice at hand, so he can only make do with it.

Maybe when he is free, he can use the drone to draw a more accurate map by himself, and Li Yu chose to carry a solar power bank when he came over the last two times.

This kind of power bank is to install a solar panel with monocrystalline silicon on the ordinary power bank, which directly uses photovoltaic power generation without access to the circuit, which is the most suitable for Li Yu's current situation.

In this way, he has preliminarily solved the charging problem of drones and some other electronic devices, and there is no need to deduct the battery and run back and forth.

And with the power bank, Li Yu naturally thought of a larger battery.

However, the weight of the battery is usually not light, except for clothes and shoes, the weight that Li Yu can carry at this stage is about 3kg each time.

The large-capacity batteries on the market basically exceed this weight, and the smaller ones are not much different from the power bank.

Of course, there is another way, which is to disassemble the battery and bring it over in batches and then assemble it, but Li Yu's current power consumption is not large, and there is no such strong demand for batteries for the time being.

In addition, his order has not yet been pulled up, and he can only rely on Ilea for security, and if he really makes too much movement, he may cause some unnecessary trouble.

So Li Yu pressed this thought.

The first time he chose to explore was the woods not too far from the castle, which Ilea had passed through when she had fled back to the greenfields from Rock Snow City.

However, it was already late at night when Li Yu appeared, and he couldn't see the surrounding environment too clearly at that time, and now he came back when the sun was just right during the day, so he could finally see the true face of this place.

The trees in the forest are mainly cedar trees, they have gray-brown bark, the outer bark is often long and cracked, revealing the reddish inner bark inside, the trunk is straight and straight, all the way up, and the leaves are slender strips, forked to the sides, evergreen all year round.

According to the map, this is also the Arias family's forest farm, which means that nearby civilians cannot cut down trees here at will, and if caught stealing, they face a hefty fine.

Li Yu casually marked the cedar tree on the map, as one of the most common tree species, the cedar tree is indeed very suitable for cutting and processing wood for architectural decoration, in addition to the resin in the bark can also be used as a binder, and the leaves of the fir tree can be distilled to extract essential oils.

The paper used on the continent of Brattis today is still dominated by papyrus and parchment, both of which can be written, but they are not strictly "paper" and have their own defects.

If he successfully introduced papermaking to the continent of Brattis in the future, the cedar tree could also be used as a raw material for pulp.

In addition to cedar trees, Li Yu also found dandelions in the forest.

With its extraordinary ability to reproduce, this little thing can easily float all over the world, and once it is rooted, it is very difficult to eradicate it.

For gardeners and farmers, there is no doubt that it is a scourge.

But this Asteraceae plant itself is quite useful, according to Clara, every time the dandelion germinates, many nearby farmers will come to dig, wash and take home as wild vegetables to eat, all parts of the dandelion can be eaten, and the seeds can also cure diseases.

People with gastrointestinal discomfort can feel a lot more comfortable by eating some dandelion seeds, and some people bump into their arms and legs, and have boils, and mash some dandelions to apply them faster.

And Li Yu knows that not only that, dandelion can cure a lot of diseases because of its anti-inflammatory function, and the roots of dandelion can also be soaked in water to drink, and when there is no tea to drink, it is also good to drink some dandelion water.

There are still a lot of bracken in the forest, and many villagers come to dig when there is no food to eat.

Fresh bracken itself is poisonous, but as long as it is blanched, it is not a big problem not to eat too much at once.

The maid said that the Arias family had treated the tenant farmers quite well, and although they were not allowed to cut down trees and hunt in the woods, they were at least allowed to dig wild vegetables, hunt small animals such as squirrels, and occasionally improve their food.

There are some very strict and money-hungry lords who have to collect money for whatever they do, meadows, woodlands, and bread stoves, but there is nothing the people below can do, after all, according to the laws of the Red Lion Empire, the land, and all the animals and plants on it belong to the lord.

Of course, if you really go too far, the free people in the territory will run out, and only the serfs will not be able to grow so much land, and the lord will also lose money.

Li Yu was not only looking for familiar animals and plants, but also sent a morning light notebook and a pencil to Clara and the four children, asking them to draw all the animals and plants they knew, and those they didn't know first.

Compared with the boring arithmetic and memorization of multiplication tables, of course, the hiking and painting lessons in the forest are more enjoyable, and the little maid can be regarded as a legitimate fish everywhere.

Even though Li Yu set up a reward of half a silver cohen, Clara seems to be at a heartless age, and she can eat and sleep every day, so she doesn't care much about how much money she has in her pocket.

And her parents sold her early in the morning, and then disappeared without a trace, and she didn't need to earn money for the family like the four little ones, so she was not interested in Li Yu's reward.

Just as the group of six people was walking and stopping, investigating and outing, the sound of horses' hooves behind them destroyed the peace and tranquility of the forest.

The two riders sped all the way to this side, chanting Merlin's name as they went.

Li Yu stood still, waiting for the two to approach, and the two riders were obviously relieved when they saw him, and one of the handsome young riders said to Li Yu, "I'm Jordi, everyone generally calls me the Purple Bird Knight, and this is my servant Karl." ”

"Do you two have anything to do with me?"

"Well, on the orders of Miss Ilea, we are here to protect you and your assistants back to the castle."

"What's going on over there at the castle?" Li Yu frowned.

Jordi hesitated and replied, "Probably...... It's an assassin. ”