Comparing the two upgrade directions, the former is dispensable, and the latter is obviously more important, so Su Yu did not hesitate to change the upgrade direction of the warehouse to the latter.

With the feature of 'medicinal property preservation', almost all the valuable herbs now will be stored directly in the warehouse of the medical hall, and if it weren't for the lack of space, Su Yu and Vivian would even think about piling all the herbs in.

Vivien: "Well, I don't have anything to do with it lately, so I can take advantage of this time to see if I can develop some new recipes." ”

With the jade bottle and the herbs, Vivienne was in a good mood at this time, and the smile on her face was much more real, unlike usual, it always made people feel a little yin and yang.

"What about Autumn Moon? Why didn't you see her? "Qiu Yue is the little girl who was recommended by Su Yu to come to Vivian to study medicine, Su Yu hasn't come to the hospital for a while, so she doesn't know much about Qiu Yue's situation.

On Qiuyang's side, the enchanter seemed to be trying to invite merit, so she would find Su Yu to explain Qiuyang's learning of enchantment in three days, so she had a better understanding of Qiuyang's learning progress.

"She's practicing herbs in the backyard." Speaking of this, Vivian's expression was a little complicated: "What do you say a child is doing so desperately?" It's only been a month since I started to concoct herbs, and it's good that a normal apprentice can recognize all the herbs in two months! ”

Even she herself had to grind for more than 40 days to remember everything!

The learning path of a normal physician apprentice is to know herbs, memorize them, and prepare herbs...... After that, the advanced content is to learn the combination of medicinal properties, then start dispensing, and finally refine medicine.

It usually takes about two to three months to memorize all the herbs and their properties, but it took less than a month for Akizuki to memorize them all.

Although her talent is high, she is not high enough to cut the time by half, so to put it bluntly, she still relies on her own efforts...... It's just that the effort is somewhat excessive.

More than enough is too much.

Vivian said that she didn't care if she didn't feel distressed, but in fact, as long as she saw Qiuyue studying for a long time, she would find an excuse to drive her back to rest.

At this young age, what will there be no time to study?

If your body is worn out, you won't be able to make up for it in this life!

Su Yu couldn't help laughing: "It's not good, there is an apprentice who consciously works hard, and you are more relaxed." She naturally knew that Vivian was a little apprentice who cared about her, but she couldn't express it with a hard mouth, and she didn't like to express it, so she deliberately teased.

"yes, I'm so easy! After accepting such a good apprentice, it's too late for others to envy me, I'm just ......" Vivien rolled her eyes and snorted softly and was about to say something, but only halfway through speaking, she heard soft footsteps behind her.

Turning her head, Qiu Yue's eyes lit up and she stood behind Vivien with a few herbs that had already been concocted...... Qiu Yue didn't hear that Vivian's words just now were deliberately in response to Su Yu, she only heard Vivian praising her for being a 'good apprentice'.

Really!

She knew that although her master didn't look good to her, she was actually hard-mouthed and soft-hearted, and she was the best master in the world!

Su Yu waved his hand at Qiu Yue as a greeting, and then Shi Shiran left the medical hall and gave the space to the master and apprentice.

……

……

Su Yu, who came out of the medical hall, returned to the City Lord's Mansion, and then opened the three drawings sent by Tang Lu before and looked at them.

【Wolf tooth shooting drawing】

Category: Props

Quality: Purple

Crafting Materials: Steel Needle*100, Composite Wood Plank*100, Gum*50 (The material ratio can be adjusted according to the specifications, the larger the size, the more materials will be consumed)

Introduction: After use, you can learn to make a wolf tooth racket, the wolf tooth racket is a weapon hanging on the city wall, it is made of a whole wooden plank, under the wooden board is placed countless sharp steel nails, when using the rope to cut off, the wolf tooth racket will fall to the ground, piercing all enemies within the range.

【Disc cutter car drawing】

Category: Props

Quality: Purple

Ingredients: Steel Needle*200, Composite Wood Plank*200, Gum*100

Description: After use, you can learn to make a disc cutter car, the disc cutter car is a large consumable weapon, which can be recycled and repaired after use, it is assembled by a whole cylinder filled with sharp sharp weapons and wheels on the left and right sides, when used, the disc cutter car will be thrown directly, the disc cutter car will move along the terrain and forcefully crush the enemies on the path.

【High-speed automatic arrow tower drawing】

Category: Props

Quality: Purple

Crafting Materials: Intermediate Gear*50, Advanced Gear*20, Precision Gear*10, Composite Wooden Plank*20

Introduction: After using it, you can learn to make a high-speed automatic arrow tower, and after the high-speed automatic arrow tower is built, it will automatically attack all enemies in the range without manual operation.

Overall, all three drawings are actually quite good, especially this high-speed automatic arrow tower, although it is purple quality like the other two drawings, it is clear that it will work better than the other two.

After all, it is automatic, which means that there is no need to consume additional manpower at that time, Su Yu only needs to place this arrow tower in the corresponding position, and adjust the corresponding settings, and then it can be used directly.

The only problem now is that with An Jie's current level of strength, he can't make precision gears, and even making high-grade gears is a time-consuming thing.

However, now that the beast tide is over, there should still be a lot of time before the next large-scale city battle, which is enough for An Jie to improve his strength.

As for the other two buildings, the materials they mainly consume are actually very similar, whether it is wood planks or steel nails, this is not a difficult material to obtain, the more troublesome is this gum.

Gum is actually a substance similar to glue, and its function is very similar, that is, to bond two items together.

The raw material for making it is a sap called a cedar tree, and because the raw material uses the sap, it is called gum.

But so far, Su Yu has not seen a white cedar tree near the territory.

There is no one on the Tianhong caravan, Su Yu has already bought a round of things this morning, and she knows best what goods are on the caravan's side.

Although three good drawings were obtained, all of them could not be made due to the lack of raw materials, Su Yu couldn't help but sigh, and then put the collection of raw materials on the agenda.

It didn't take long for the people in the realm to notice that there was a new collection in the quest hall - collecting the sap of the cedar tree.