And before these ghost skeletons were attracted over, Su Yu had already killed the first ghost skeleton.

This is the attack method that the two of them have discussed before, and Toya, who has better archery skills, will attack the ghost skeletons behind Laike, attract them, and then Su Yu will solve them.

In this way, not only will it not allow Lake to be hunted down for too long and consume his physical strength too much, but Su Yu can also not waste his output without accidentally injuring him.

After the first batch of ghost skeletons was completely eliminated, Lake ran back with the second batch of ghost skeletons...... This cycle was not over until the fifth batch of ghost skeletons were pulled in front of the arrow tower and killed by Doya and Su Yu.

……

At the moment when the last ghost skeleton was killed, Lake sat on the ground without any image, sweating and panting.

Su Yu knew how tired he was, after all, he had been running at top speed for a total of ten minutes.

The most important thing is that he not only has to run, but also has to pay attention to the surrounding conditions at all times, in case he is in the shade, normal people will definitely not be able to withstand such a high amount of exercise...... Lake is also a normal person, and he can't bear it, but he has the agility potion given by Su Yu, so he can barely support it, otherwise he would have to lie down seven or eight minutes ago.

Su Yu knew how tired he was, so she didn't go over to disturb him to rest, but just asked Doya to help deliver food and water to replenish her strength, while she herself hurried to the stone gate and picked up the black stone.

Then, Su Yu walked around the stone gate, groped for a while, and finally put the black stone into an inconspicuous groove in the stone gate.

At the moment when the black stone was put into the groove of the stone gate, Su Yu received a hint that the stone door was sealed-

[Do you seal the ghost stone door?] 】

[Tips: During the sealing of the ghost stone door, the ghost skeleton will not stop refreshing, but the refresh speed will be reduced by 30%, and the refreshed ghost skeleton will be locked in the ghost stone door during this period, unable to leave, and when the seal is lifted, all the ghost skeletons generated during the seal will escape from the ghost stone door. 】

Sure enough, it was the same as before.

Su Yu's eyes flickered slightly, and then he pressed the black stone in his hand hard, expressing his choice with practical actions.

[The ghost stone door has been sealed, sealing time: 120 hours.] 】

After successfully sealing the ghost stone gate, Su Yu breathed a sigh of relief, and then looked around, ready to see if there was anything else.

But no matter how she looked at it, there were only flowers and trees in the vicinity, and nothing else of value at all.

Su Yu was not disappointed, after all, she didn't expect anything, and when she returned to the vicinity of the arrow tower, she began to pick up the drop of the ghost skeleton on the ground.

【Gain Bronze Coins*35】

【Gain Bronze Coins*17】

【Acquire Unknown Bone*6】

【Gain Scale Powder*43】

……

There are only three main drops from the Spectre Skeleton, one being Copper Coins...... Needless to say, this thing works.

The other two drops are 'Unknown Bone' and 'Scale Powder'.

This 'unknown bone' is actually similar to a bone stick in appearance, and its main function is that it can be made into something called 'bone meal', and bone meal is one of the raw materials for 'fattening'.

Boosting fertilizer, literally, is used for crops and can reduce the growth time of crops.

The more advanced the crop boosting fertilizer, the worse the effect, and each plant is not infinite in the use of boosting fertilizer, but has an upper limit of use.

In general, a plant can only be used five times to promote growth.

In addition to making bone meal to synthesize fat, bones have some other functions, such as bone spurs (weapons), bone sticks (weapons), and some weird decorations, such as skeleton vases, skeleton ornaments, skeleton desks, and so on.

As for the other material, scale powder, which is a white powder that is soluble in water, is a common alchemical material.

When it comes to alchemy, it must be said that it is different from alchemy...... The most obvious and understandable difference between the two is the difference in raw materials.

The raw material of refining medicine is herbal medicine, and the dosage needs to be cautious and careful, and the process must also be careful, not a single cent can be wrong, otherwise it will fail, if it just has no effect, it is good, and some may even make a good medicine to cure the disease and save people into a poison that kills people.

Alchemy, on the other hand, is different.

There are various raw materials for alchemy, except for scale powder, any item can be used as a material for alchemy, such as berry plants, herbs, ores, animal skins, animal teeth...... All sorts of messy things can be used as raw materials.

Alchemy can be said to be a non-refusal of those who come, and there is no taboo.

'There are only materials that cannot be obtained, and there is nothing that cannot be refined', this sentence is not a joke.

Of course, what can be refined can be refined, but in the absence of a correct recipe, what can be refined...... Then it is unknown.

Su Yu knew that there was an alchemy formula for scale powder, which could be made into a transparent solution with scale powder as the main material and some other auxiliary materials with the same attributes.

Applying this solution to the body will cover the body with a thin film, similar to the almost invisible body of the ghost skeleton, and is a common stealth (non-invisible) item.

……

After cleaning up everything on the ground, Su Yu took out the remaining materials in her backpack and prepared to continue to set up defenses - this was in preparation for the seal to be lifted in five days.

Although Su Yu had most likely recruited Meke at that time, and would bring him over to deal with these ghost skeletons, this was just her plan, and the plan couldn't catch up with the changes, and Su Yu had too many plans to change due to unexpected situations, so she had to make a few more preparations.

When Su Yu set up the defenses here, Lake was almost resting, so he came to ask Su Yu if he had any orders, and when he saw Su Yu shaking his head, he went to the mine to prepare to continue digging stones.

Although he didn't bring a pickaxe with him on this trip, Su Yu, the location of the mine that is commonly used for mining, has already built a wooden box, which is specially used to store the things that Laike needs to mine.

For example, the Mine Pickaxe, the Whetstone, the Basic Healing Potion, and some of them were not much, but they were definitely enough for him to eat for two or three days.

In addition to this, there was a wooden cart parked at that location, which Lake used specifically to transport stones.

After Lake left, only Su Yu and Doya were left in this place.