Soon, Su Mu and the white-clothed goddess began to act. After all, time was limited, and Su Mu only had three days to prepare.

The proving ground is big and there are a lot of people. Su Mu and the others were cautious enough to avoid encountering the old powerhouses.

Soon, Su Mu and the others met an old donkey. The donkey was covered in black hair, and he didn't know how many years he had lived, and even his teeth had almost fallen out.

At this moment, the old donkey was very fierce, and he let out a long roar from the sky, with a terrible attack in his voice, which was a sonic attack, which shocked people's souls.

Seven or eight people were besieging the old donkey, but instead of killing the old donkey, they suffered a disaster.

The old donkey exerted his might and directly used a terrifying sonic attack to stun the two second-level peak kings to death. It was just a roar, and the two of them shattered their bodies and died in an instant.

There were five people left, they were originally besieging the old donkey, but now they were being chased and killed by the old donkey, this situation has exceeded their expectations.

When Su Mu and the others saw it, they saw five people being chased and killed by the old donkey. These people are full of energy and blood, and the old donkey needs to replenish his energy.

So, instead those people became the target of the old donkey.

Su Mu and the white-clothed goddess looked at the old donkey and were shocked. This old donkey is very strong, even if he has lived for countless years, he is still a third-level peak beast king.

Moreover, the roar of the old donkey is very terrifying, which can suppress people's hearts and souls, making it difficult for people to defend.

Among the five people, there were two third-level peak kings, but at this moment, in the face of the mad old donkey, they were invincible, and they could only retreat.

When the five of them saw Su Mu and the white-clothed goddess, they immediately let out a cry for help.

"We are the Sand Tribe, save our lives, the Sand Tribes will be rewarded!" One of them said.

There are strong people in the Sand Clan, but the trial ground is very special, and in some places, strong people who have cultivated too high cannot enter.

Like here, it's a valley. This old donkey was suppressed here, and the strong who were too strong could not come in.

This is a testing ground, mainly for trials. If a strong person with too high cultivation appears, he will not be able to achieve the purpose of the trial.

There was another shrill cry, and it was the arrival of the old donkey's attack.

Su Mu's heart trembled, among those attacks, there was a powerful spiritual power, which pointed directly at people's hearts and souls, making him feel uncomfortable.

At this moment, Su Mu understood. No wonder the people of the Sand Tribes were beaten and retreated, it turned out that the old donkey's sonic attack was strange.

The next moment, in Su Mu's sea of spiritual consciousness, three spiritual power lotuses flew out. The three spiritual power lotuses gathered together to form a special defensive shield that instantly enveloped several people.

The old donkey's sonic attack arrived, but when it encountered the spiritual power defense shield summoned by Su Mu, it couldn't penetrate a single bit.

The five members of the Sand Clan were shocked and delighted when they saw this scene.

"I know that you are the goddess in white and the eyes are lawless, this kindness, we Sha Clan remember!"

The five rejoiced in their hearts, and it seemed that they had been saved.

Su Mu looked at the five people and said, "Don't talk about those imaginary things, let's have something practical." ”

"What do you want?" The Sand Man asked.

Now the situation is critical, as long as it is not too demanding, they will not refuse.

"Give me runestones, and I'll save you!" Su Mu was simple and straightforward, and said his purpose.

Originally, Su Mu planned to snatch it, but he didn't expect to encounter such a thing. Therefore, at this moment, Su Mu did not snatch it, but used this way to obtain the rune stone.

"Runestone?" The people of the Sand tribe were stunned, and some of them didn't expect that Su Mu's condition turned out to be this.

Although runestones are rare, they are still more important than life.

"We have two runestones here, both for you!" One of the Sand Tribesmen took out two rune stones, which were not too big or small, and threw them to Su Mu.

The Sha people were very decisive and agreed to Su Mu's conditions.

"Good!"

Su Mu smiled, and after taking the rune stone, he turned his gaze to the old black donkey.

After Su Mu and the white-clothed goddess came, the old black donkey did not act rashly. Because the lotus of spiritual power that Su Mu had sacrificed just now deeply shocked it.

If it was in its heyday, a roar would kill Su Mu and them. But now it can't, because the old black donkey is too old, and his blood is exhausted, and it is not suitable for a big war.

"I can give you rune stones!"

Suddenly, the old black donkey opened his mouth and said to Su Mu.

Su Mu was stunned for a moment, stared at the old black donkey, and said, "Do you have rune stones?" ”

The old black donkey's big long mouth closed one by one, and said, "I have been here for countless years, killing countless trialists, and the rune stone was naturally obtained from them. ”

Su Mu said: "Okay, you give me rune stones, I don't have to kill you!" ”

The old black donkey spoke again and said, "How can I trust you? ”

Su Mu shrugged his shoulders and said, "Now you have no choice!" ”

Su Mu and the white-clothed goddess stood together, and they would do it at any time. Not far away, there were five Sand people.

The old black donkey is not afraid of other people, what it is afraid of is the three spiritual power lotus sacrificed by Su Mu. Therefore, the old black donkey is now cornered, and there seems to be no other choice than to believe in Su Mu.

"Well, I hope you keep your word. Otherwise, even if it is death, I will make you pay a heavy price! ”

After the old black donkey finished speaking, he took out three rune stones from the genetic vault. The three rune stones were obtained by the old black donkey from some trialists, and this was a long time ago.

Two of the rune stones already had cracks, and although they could still carve runes on them, they would inevitably reduce the power of the runes.

Only one of them is still intact and can be used to arrange the rune array.

Su Mu took the three rune stones, looked at them twice, and then said to the old black donkey: "You go, I'll count." ”

Seeing that Su Mu was going to let the old black donkey go, the Sha people didn't want to agree.

One of them said, "This beast killed both of us, and we can't just let it go." ”

Su Mu looked at the people of the Sand tribe and said, "Then you do it yourself, we are very busy, and we don't have time to waste here." ”

"This ......"

After hearing this, the five Sha people were immediately helpless. They were chased and killed by the old black donkey just now, but they didn't have the strength to kill the old black donkey.

Seeing that Su Mu and the white-clothed goddess turned around to leave, one of the Sand Tribesmen immediately said, "As long as you kill this beast, after you go out, we can give you rune stones." ”

Now, they can see that Su Mu is very interested in rune stones.

After Su Mu heard this, his eyes rolled straight, this seems to be very good.

Seeing Su Mu hesitating there, the Sand Clan man continued: "Although rune stones are rare, we can still get a few rune stones. If you kill this beast, we can give you at least five runestones. ”

"Sounds good!" Su Mu said thoughtfully.

Then, Su Mu once again looked at the old black donkey. The old black donkey saw the murderous aura in Su Mu's eyes, and there was cold air in his nose, which was both annoyed and a little afraid.