Generally speaking, a place like the treasure of the Dragon's Lair is a place where a heavy treasure is buried that is enough to shock the world, and it is too late for the people who found it to conceal it, so how can it spread the news everywhere?

Even if you don't have the ability to hunt for treasure, you can make a lot of money by selling the treasure map.

What puzzled Zhang Qingfeng was that even Du Dayan actually got a treasure map.

According to the direction indicated on the treasure map, Zhang Qingfeng made a rough calculation, and it was about three hundred miles to the Tianwu Trading House at the foot of the mountain where they started.

You must know that the deep mountains and dense forests are not as smooth as the official roads, especially the 100,000 mountains that are full of dangers, and the dead horses running in the Wangshan Mountains are by no means just talking, and the speed of Zhang Qingfeng and a few people in these more than 300 miles will be thankful for arriving in 20 days.

So several people prepared food for more than two months.

In the first three days of entering the mountain, the five of them advanced more than 20 miles and crossed two mountains, but as they went deeper, the mountain road became more and more difficult to walk, and some brute beasts appeared from time to time.

The brute beasts here are much more ferocious than those in Zhou Yuan, and they have the strength of eight or nine orders at any time, but although Zhang Beitian's tiger and leopard group is not large, it is still very easy to deal with one or two brute beasts.

In the process of fighting with the brute beast, Zhang Qingfeng made a new discovery about Du Dayan.

"Boss Du, have you ever practiced the pupil technique?"

Hinted by Du Dayan, Zhang Qingfeng called him Boss Du, this guy was very satisfied with this title, and when he saw Zhang Qingfeng asking himself, he laughed proudly, "Haha, Zhang Feng, I didn't expect you to observe quite carefully, since we are brothers, the eldest brother will not hide it from you, I have never practiced any pupil techniques at all, but I am born with excellent eyesight, and I can see things as clearly at night as during the day, and I am completely unaffected by the darkness, now I know how powerful the eldest brother is, right?"

"Born to see things at night?" Zhang Qingfeng's eyes lit up, and he said in surprise: "Could it be 'Qingyang Pupil'?"

"What, what is it?" Du Dayan didn't understand for a while.

Zhang Qingfeng suddenly understood, knowing that Du Dayan had never even heard of this rare pupil, and immediately said, "Can you let the little brother see your eyes?"

"What's not to see here? Come on, look at whatever. What else can you see?"

Du Dayan's eyes are not a secret, there are not a few people who know it in Blackstone Town, where he was born, and the doctors in the town have also examined him, and they all see something unusual.

Zhang Qingfeng opened Du Dayan's eyes and looked at it.

These eyes looked no different from ordinary people, but the pupils were very small, only two-thirds of ordinary people, but when he looked closely, he couldn't help but gasp.

"Boss Du, are your eyes very afraid of light? When suddenly stimulated by strong light, it will be in severe pain and unbearable, and even affect the aura in the sea of wisdom, and every day at noon, you will have blurred vision for no reason, and it lasts for about twenty breaths. ”

"You, how do you know?"

Du was taken aback, his secret was only known to the three of them, how did Zhang Qingfeng find out?

"It turned out to be a different eye 'Xingyue Pupil'!"

Zhang Qingfeng let go of his hand and looked at Du Dayan with a look of emotion.

"Brother Zhang, what are you talking about? How do you know the secret of my eyes? Could it be that you still know medical skills? Are my eyes good or bad?"

The amazing eyesight made Du Dayan different from ordinary people, and brought him a lot of convenience and benefits.

But the dark disease of his eyes has become a heart disease for him.

Especially after entering the Qi Refining Realm, the blurred vision is getting longer and longer every day, and the pain time is getting longer and longer, he is very worried that if he continues like this, he will become blind one day.

'Dragon's blood cures all diseases', this is a popular ancient saying in the Great Zhou Kingdom, this time into the 100,000 mountains of the dragon's lair to hunt for treasure, Du Dayan's real purpose is actually to see if he can get a bottle of dragon blood to cure his eyes.

As for the treasure of slaying the dragon, he knew that he was two catties, and he didn't have any extravagant hopes at all.

"Of course it's a good thing. ”

Zhang Qingfeng was also very excited, he couldn't believe that in this land of projectiles, there would be someone in the Great Zhou Kingdom who had a 'Star and Moon Pupil' that was rare to see in a hundred years.

Continental martial arts, absorb spiritual energy into the sea of wisdom, lead spiritual energy into the meridians, relying on the difference in the speed and quantity of spiritual energy, through the martial arts and methods to release, it will burst out with powerful lethality, this is the root of the strength of martial arts.

But there is a specialization in the art industry, and most martial arts cultivators will only choose one 'technique' to practice in order to pursue the ultimate in martial arts.

For example, a swordsman who specializes in swordsmanship, a swordsman who only cultivates swordsmanship, an alchemist who is proficient in medicine, and a qi practitioner who is good at hurting people with qi.

There are also some people who will find a different path, not take the usual path, and only cultivate spiritual power, such as psychicists.

There are also a very small number of people who focus on the cultivation of the 'Pupil Technique', and through the gaze of their eyes, they kill people invisibly.

Like Qin Yun'er's cultivation of Mei Gong, one of the important parts of it is to use her eyes to confuse the target.

Of course, these pupil techniques that were cultivated by relying on cultivation techniques were far inferior to those martial arts cultivators who were born with different eyes.

Du Dayan's 'Xingyue Pupil' is one of them.

A person with such a strange eye, if he cooperates with the correct cultivation method, is enough to turn his gaze into a sharp blade, and kill people invisibly.

It's just that there are pros and cons to everything, although Xingyue Pupil can make people's eyesight far beyond ordinary people, but there is also a fatal flaw, that is, every time the night vision ability is used, it will cause different degrees of damage to the owner Huihai and the eyes themselves.

Pupil cultivation techniques are extremely rare, the most basic secrets are all silver-level primary, in the Great Zhou Kingdom, where there are not even a few sets of bronze-level intermediate exercises, people like Du Dayan naturally have no opportunity to practice pupil techniques, and it is impossible to eliminate the dark diseases brought by the 'Xingyue Pupil'.

As it turned out, Zhang Qingfeng guessed correctly.

"However, if there is no correct cultivation method, good things will also become bad things, Boss Du's ability to frequently use Xingyue Pupil without practicing the Pupil Technique has already hurt Hui Hai at all, if you don't solve it as soon as possible, at most a year, your eyes will be completely blind, even if there is no strong light stimulation, Hui Hai will be in pain all day long. ”

"Blind?"

Du Dayan's face changed greatly, but he knew how unbearable Huihai's pain was, if it really hurt all day long, it felt like life was worse than death.

"Brother Zhang, do you have a way to save me? Tell me, do you have a way?" Du Dayan reacted quickly, and at the same time grabbed Zhang Qingfeng's hand in fright, and asked him for help.

Since Zhang Qingfeng can see that there is a problem with his eyes, there should be a cure, Du Dayan pinned all his hopes on Zhang Qingfeng, who is more than ten years younger than him at this age, but who is more like the boss than him.