"Good guy, there really is something! Fang Yao, you can do it, I, Zhu Shao, am convinced!"

With a look of admiration on his face, Zhu Shao took out four approximately rectangular stones three centimeters long and two centimeters wide from the inside of these bears.

A number was deeply carved into each stone with a carving knife.

"I guess it's the work of the mysterious man. These numbers are what the mysterious man wants us to discover." Fang Yao's lips finally curled up with a smile of victory.

Zhang Huixin said: "Wait a minute, Fang Yao, look carefully. The stone just taken out from the belly of the five-color bear is the Arabic numeral 9, but there seem to be two horizontal bars carved on the left side of this '9'."

Fang Yao frowned slightly: "It's indeed two horizontal bars. The mysterious man is really the one who didn't forget to make things difficult for us near the end."

Stein took the stone and observed it carefully: "This should be an equal sign, and since it is an equal sign, it means that if the numbers in these stones have some meaning of arrangement and combination, then we must find

Follow the pattern and place the stone containing the numbers '9' and '=' in the last position."

Qin Lanzhi said: "I agree with Mr. Stein's speculation."

Equal sign? Mathematical operation?

Fang Yao was no longer confused: "Since we are sure it is an equal sign, then take a closer look at what the symbols are on the left or right side of each stone. Then we can determine the order of the numbers."

However, everyone's eyes carefully observed the remaining three stones, and found that they were just three numbers without any symbols for addition, subtraction, multiplication and division.

The stones are "5" taken out from the belly of the brown bear in the northern cabinet, "3" taken out from the belly of the brown bear in the southern cabinet, and "8" taken out from the belly of the brown bear in the western cabinet.

Zhang Huixin said: "It is now clear that 9 is placed in the last digit. What the mysterious person means is to use the three numbers 5, 3, and 8 to form a set of mathematical operations that result in 9."

Ah, I have a headache. I am not very sensitive to mathematics. It is better to say that liberal arts girls are more interested in mathematics or literature...

Fang Yao was still secretly vomiting her bitterness, and when no one else could react, Zhu Shao blurted out: "This is too simple, 8 minus 5 times 3 equals 9."

Fang Yao was quite surprised: "Ah? So the order is 8539, so simple? Zhu Shao, how did you react? Aren't you always in a daze?"

Everyone else's eyes were also focused on Zhu Shao's face.

Zhu Shao was slightly embarrassed: "Fang Yao, don't say I'm confused! It's you and Xu Yueren who speculated on the 'twisting' things about the mysterious man. I'm just not good at it. I'm not good at reasoning. I'm good at mental arithmetic.

It’s true, no one is my opponent!”

Qin Lanzhi said modestly: "Indeed, I have recited and memorized a lot of things, but my mental arithmetic ability is still a little behind Zhu Shao."

Xu Yueren said: "Since Zhu Shao has already arrived, we believe it! His wise saying, 'Whoever knows, will succeed' is suitable to be used here."

Stein and Niu Xi had no objections. Fang Yao breathed a sigh of relief and checked the tablet: "There are still nearly 20 minutes left. We have enough time to rest."

"But Zhu Shao, I still have to ask in a responsible manner, are you sure this is the order of combination?" Just in case, Fang Yao asked the carefree Zhu Shao for the last time.

Zhu Shao shook his head impatiently: "Nonsense, you have to be cautious about such a simple thing! After solving the mystery of those brown bears that caused headaches before, there is no difficulty in the finishing work."

Fang Yao knew that it would be useless to worry any more. She secretly arranged and combined many possibilities of numbers and calculation methods, but none of them were as straightforward and straightforward as those provided by Zhu Shao. They were all ruled out.

No longer hesitating, Fang Yao said loudly: "In this case, everyone should relax completely. I will fill in the answers in ten minutes."

The ten-minute rest indeed brought valuable corrections to the team, and the tired brain cells were fully relieved. It cannot be said that everyone's fatigue state has been completely eliminated, but it can be said to have been greatly improved.

Fang Yao used the brown watercolor pen to write the four numbers "8539" on the noteboard.

Xu Yueren suggested: "Fang Yao, why not write down the calculation formula Zhu Shao just mentioned below to avoid the mysterious person denying it."

At this moment, before Fang Yao started writing, the radio sounded: "Do I seem to be denying it? As long as the four-digit password 8539 is written, the Demon Team will officially pass the level. The key is inside the watercolor pen."

Originally here?

Fang Yao bit her lip lightly, a sense of being teased appeared on her face.

Xu Yueren shook his head helplessly, took the watercolor pen in Fang Yao's hand, unscrewed the tail part, and removed the pen core. Sure enough, the small key inside dropped to the ground with a crash.

Fang Yao picked up the key and said to everyone: "Although the key is sometimes hidden close at hand, if we don't complete the question and instead go look for the key, the mysterious person may not let us pass the level. So, next time

We still have to pass the first level, get the key upright, and shut up the mysterious man."

Everyone admires Fang Yao's leadership and admires her wisdom and reasoning ability.

So, the puzzle of the third level was officially solved, Fang Yao opened the door and led the team members into the room of the fourth level.

The third level door is closed again, and everyone is in the fourth level.

As soon as they entered the fourth level, everyone found a kettle placed on an antique wooden coffee table, and there were also six small white closed jars of a uniform standard. They didn't know what was contained in them.

On the right side of the six small white jars, there was a dark light-proof glass jar with a label and description removed, and a large black jar, obviously made of clay.

At the same time, next to these jars, three cups were placed.

The first cup is a jewel-like jade cup, with a long "handle" extending from the cup body, like a small tail.

The second cup is earthy in color and its features are not as prominent as the first cup.

The third cup is more like a bronze curio than a cup.

There are three types of cups of different shapes, as well as jars, glass bottles, and small jars, and eleven different utensils.

Of course, there is also a kettle, which is the most "normal" thing.

Next to the coffee table, there is an iron bucket filled with clean water. There is a water ladle floating on the water.

The appearance of the water ladle and clean water, and then connected to the kettle, this combination is clear at a glance. In other words, "hot water" must be used to solve the problem in this level.

Overall, this messy set of things was piled up in the center of the room, taking up a lot of space.

Near the exit is where the note board is.

Different from the silent note board that appeared in the last level, this time there are clear questions on the note board. And it is a long list, which makes people look like they have a headache!

Everyone followed Fang Yao's footsteps, put aside a series of strange items in the central area, came to the noteboard shelf, and started reading:

Question 1 - Please use the correct utensils to drink the liquid in the glass bottle and the liquid in the black jar respectively.

Second question - Please find a way to taste the contents of the small white jar in sequence.

Question 3 - Please arrange the order of the small white jars correctly according to the color rules.

These three questions are all in the form of declarative sentences, but they are so difficult that everyone who has finished reading has been retreating in their hearts.

Unlike the previous level, which seems to be full of fog and has very few clues, as long as you find the "core" of the problem, you can pass the level. In other words, what is required is strong and meticulous logical reasoning ability.

This level not only tests reasoning, but more importantly, looks for "answers" in vague prompts, which requires a corresponding knowledge reserve.

The fourth level is essentially the combination of the second level and the third level!

The difficulty suddenly increases!

Fang Yao took a deep breath, pinched her palms with her thumbs, and murmured to herself: "You can't give up, you have to do things one by one, and you won't know until you work hard!"

"The Angels have Guang Hai. Even though I don't want to admit it, that sinister woman Zhao Ting also has a very high IQ. I can't admit defeat either!"

She cheered herself up and her eyes were no longer confused, so she raised her voice: "Everyone, please do what the notice board says now!"
Chapter completed!