In an instant, the furious impact force raged, unleashing the power of terror. It took a few breaths before it gradually subsided.

Fortunately, most of the power of this shock wave was resisted by the light curtain released by Sun Xiaofei, and the aftermath of the much weakened power that fell on Yishi and the others. There are still some people who have been shocked into the distance and look a little embarrassed.

When the dust cleared when the explosion occurred, everyone's eyes converged to see that the puppet had turned into a pile of debris scattered around.

In the place where the puppet was located, a large pit appeared. The ground around the pit was torn, and there were craters and bumps everywhere, as if it had been ravaged by some behemoth.

"Elder Yu, are you still satisfied with this kind of power?" Sun Xiaofei smiled at Yu Yishi.

"The power is good. However, this thing can only be used once, so the cost will increase exponentially, which will be of limited help to us, but will increase our burden. Yu Yishi's eyes rolled and said lightly.

When Sun Xiaofei heard this, he didn't feel strange in his heart. He knew that Yu Yishi said this, but he just wanted to bargain with him and seek more benefits for himself.

Sun Xiaofei smiled faintly and said, "If Elder Yu thinks it's not cost-effective, then we'll stop this matter." I can consider finding other forces to cooperate, and the Chishui Gang will be interested in this. ”

"Little brother, don't get me wrong. That's not what the old man meant, let's go back first, and then find a place to talk. When Yu Yishi heard Sun Xiaofei's words, his face froze and he sneered.

"Good. After listening to Yu Yishi's words, Sun Xiaofei thought for a while and nodded in agreement.

Sun Xiaofei, Yu Yishi and others immediately used their methods to leave one by one. Shortly after they left, there was a slight sound of breaking wind, and several figures flew from all directions and landed around the pit. Seeing this scene in front of him, his face was full of surprise, and he looked everywhere to find the reason.

Yu Yishi landed outside a house, commanded the people behind him, pushed open the door and strode in. Several Black Dragon Gate powerhouses immediately set up defenses all over the surrounding area, looking around vigilantly, forbidding anyone to approach here.

Sun Xiaofei glanced at it and walked in with an expressionless face. Because this is the first cooperation between the two sides, Sun Xiaofei and Yu Yishi are more cautious, and the content of the conversation is around the distribution of interests, trying to strive for the greatest interests for themselves. This conversation lasted more than an hour, and finally all the details were negotiated, which contributed to the cooperation plan between the two sides this time.

The cooperation is finalized, and the next step is the specific implementation rules. Sun Xiaofei is not good at these things, so he naturally leaves it to Yu Yishi to arrange, as long as it damages his interests, Yu Yishi can do whatever he wants.

Sun Xiaofei listened to Yu Yishi's words, and occasionally said a few words, and the two exchanged their opinions. As soon as this matter was decided, Yu Yishi and the others did not stay any longer, immediately said goodbye and left, went back to prepare the materials needed to refine the Demon Destroying Arrow, and arranged personnel to be responsible for contacting Sun Xiaofei on all matters.

Sun Xiaofei sent Yu Yishi and the others away, and turned around and returned to his room. After thinking about it carefully, I didn't find any problems, so I cultivated with peace of mind.

Thinking of the current situation on the mainland, Sun Xiaofei couldn't wait to rush back immediately to see how his relatives and friends were doing. However, he can't go directly now, and the news from the mouths of the Black Dragon Gate and the others that this road is not safe, and he still needs to pass through those areas where the undead wander.

Even though the number of undead is amazing, Sun Xiaofei doesn't care about it. Just worried about alarming the people of the Underworld, the Underworld sent a master to intercept him. In order to reduce these troubles, Sun Xiaofei had to use the manpower and resources of the Black Dragon Gate to make full preparations first, and then even if he faced a strong enemy, he would have more means to deal with it.

Yu Yishi's speed was very fast, and he sent someone to send the materials over at night, and Sun Xiaofei accepted them unceremoniously. In the next few days, in addition to his normal cultivation, Sun Xiaofei quietly refined the Demon Destroying Arrow in the room. Sally sometimes came to see this and turned away.

After this period of treatment, Nell's injuries have also healed a lot. Although he could not return to his original state, he was at least able to move on his own. It's just that the injuries he suffered before were not light, which caused his current strength to be greatly reduced, less than half of the original.

Regarding this situation, Yu Yishi and other strong people of the Black Dragon Sect also comforted him with kind words, persuading him to rest assured that he would recuperate from his injuries, and when his injuries were healed, his cultivation would definitely recover.

Hearing these words, Nell knew what they were thinking, and nodded silently in response. Ulrika and Sally came to visit him from time to time, and thanks to Ulrika's care, Nell was able to get better so quickly.

Sun Xiaofei went to see Nell in the past few days to find out about his situation. Now that he was busy refining demon-destroying arrows, he didn't have much time to go to him.

When Sun Xiaofei was refining the Demon Slaying Arrow, a large group of people from the Chishui Gang and other forces came to the Black Dragon Gate to find Yu Yishi and discuss a plan to deal with the undead attack.

Recently, the spies sent out by various forces have found traces of the undead nearby. Hearing this news, Yu Yishi and the others hurriedly summoned the strong people of various forces to come over to discuss countermeasures.

In the huge hall, the heads of people were crowded with strong people from all sides, Yu Yishi, Sally and other strong men of the Black Dragon Gate sat on the left side of the hall, and opposite them, there was another big force, the Chishui Gang, Como sat next to a man with a cold face and red hair, this red-haired man was Yan Qing, the deputy leader of the Chishui Gang.

"Brother Yu, we are in trouble, and recently my subordinates have been haunting the neighborhood with undead. I've sent the message out. It will take four or five days for the helper to arrive here at the earliest. Yan Qing's face was solemn and he said in a deep voice.

The powerhouses present all nodded slightly when they heard Yan Qing's words, and no one would question what he said. The prestige that the Chishui Gang has built up over the years still has a great influence on the powerhouses of various forces.

Yu Yishi nodded, pondered for a moment and said, "Brother Yan, what you said is good. My men were also attacked by the undead, but fortunately they didn't cause much damage. We should find a way to solve this matter as soon as possible. ”

"With our current strength here, if there are too many undead, I'm afraid it will be very difficult to deal with. Yan Qing said with some concern.

Yu Yishi and the others listened, and exchanged opinions with the people next to them. With a solemn face, he said slowly: "This time, I am the Black Dragon Sect and the Chishui Gang, the first thing now is to prepare for all the battles first, and all your forces will go back to make arrangements, if you want to survive, you must work together to fight the enemy." Don't hide good things, take them out and use them. ”

Yu Yishi's words were orderly and reasonable, and the strong men of all the big and small forces present could not find a reason to oppose it. They all nodded and said that they would cooperate with the Black Dragon Gate and the Chishui Gang to deal with this crisis.

After some discussion between Yu Yishi, Yan Qing and others, and after determining the things and tasks to be done by the various forces, all the strong people of the various forces dispersed one by one.

The forces led by the Black Dragon Gate and the Chishui Gang began to deploy troops and arrange them in full swing. Yu Yishi found a time, went to Sun Xiaofei, told him these things, and asked about the refining of the Demon Destroying Arrow. If Sun Xiaofei needed help, he could immediately call a few clever subordinates over.

Sun Xiaofei declined his kindness, heard the news, pondered for a moment, and replied to him. He promised Yu Yishi to refine the Demon Slayer Arrow within a few days, so that they could use it against the undead when the time came.

Sun Xiaofei is very protective of the method of refining the Demon Destroying Arrow, and will not easily leak it out and be known by others. No one knows how the Demon Exterminating Arrow is refined, Sun Xiaofei used the skills of refining puppets and talismans, and cooperated with the power of the Five Elements to refine the powerful Demon Exterminating Arrow, which is Sun Xiaofei's secret and will not let others know.

Sun Xiaofei was not so anxious about refining the Demon Slayer Arrow, but now that he heard the news that the undead were coming, his refining plan had to speed up, striving to make use of the materials at hand as soon as possible, and be able to refine more Demon Slayer Arrows for use when dealing with the undead.

In order to avoid attracting the attention of other forces, after Sun Xiaofei refined the Demon Destroying Arrow, he directly found Yu Yishi for handover, and the two sides secretly obtained their own benefits according to the conditions negotiated before. Sun Xiaofei obtained a batch of valuable cultivation materials and other items from Yu Yishi, as well as a large number of high-grade spars, which were enough for him to use on his way to Tiandu City.

Yu Yishi divided a part of the demon-destroying arrows refined by Sun Xiaofei and handed them over to the powerhouses of the black dragons, and some of the slightly lower strength were naturally not qualified to have them. The powerhouses of the Black Dragons have been paying great attention to the Demon Slayer Arrow ever since they saw the power of the Demon Slayer Arrow that day. The others were still worried about how to deal with the undead attack, but they looked natural and didn't appear to be so panicked.

Although about the matter of the Demon Slayer Arrow, Yu Yishi has always strictly forbidden those strong people under his command to leak out. However, there are no impermeable walls in this world. This matter is still known to the people of the Chishui Gang, the power of the Chishui Gang is slightly lower than that of the Black Dragons, and they also have a lot of eyeliner distributed among the various forces.

Yan Qing secretly met with Yu Yishi that day, and the two talked secretly, and then separated. Yu Yishi secretly sold some demon-destroying arrows to Yan Qing, and also made a lot of profits from the latter, and both parties were happy. The other forces were kept in the dark and did not know about it.

Sun Xiaofei originally planned to leave here, but Yu Yishi was kind enough to stay, and he wanted to see the results of his refining, so he agreed to stay for the time being, and when this crisis passed, he left here and went to the Imperial Tiandu City.