The main function of the Ice Heart Technique, the Ice System Mind Method, is to calm the mind and calm the mind, so that the cultivator will not be confused by sticking to his original heart, and can effectively prevent the attack of spells with the purpose of enslaving the opponent's spirit such as charm and mental manipulation. It was an active defense technique, which was much more clever than the passive method of creating a fake spiritual power barrier to resist a spiritual power attack that Qinglan Shenghao had given to Lu Yi before.

The Ice Heart Technique is divided into four levels of realms, and each level of improvement can prevent attacks in terms of spiritual power that are one level higher than one's own spiritual power realm. For example, if Lu Yi cultivates to the first layer of the Ice Heart Technique now, he will not be afraid of the cultivators of the Soul Consummation level who will perform the puppet spell on him, and if he has cultivated to the second level, he will not have to worry about the spell casting of the monks in the early stage of soul building. However, this Ice Heart Technique is not absolutely able to prevent all puppet techniques or charm techniques, but also depends on the opponent's spell casting methods, mental strength and the sophistication of the spell, the Tao is one foot high, and the magic is one foot high, this puppet technique and the charm technique are also uneven, some are clever and some are inferior, such as the charm Qingzhu's means plus her own qualifications, casting the charm technique may break through the defense of the Ice Heart Technique. In any case, the higher the Ice Heart Technique, the greater the possibility of preventing attacks, so Lu Yi immediately began to comprehend and cultivate after obtaining this Ice Heart Technique.

With the experience of cultivating this technique instilled in Lu Yi by the Frost Illusion Ancestor, it only took Lu Yi a few hours to complete the first layer of the Ice Heart Technique. In the past few hours, the Frost Illusion Ancestor also considered the proposal of the Jiao Clan, and after weighing the pros and cons, he still decided to let the sixth son improve here. According to the Frost Illusion Ancestor, he will have a certain restraint on mental power spells in the cold environment, so if he really fights the hidden enemy in his Ice Palace, it will also be beneficial to his side. At present, it seems that except for the accident of Donald Ghost, there are no enemies who have appeared, and I don't know if the news of Lu Yi carrying a large amount of Jiao Clan's essence blood has not yet spread, so it is necessary to wait for a while, or make this matter a little bigger, so that Lu Yi will have time to hurry up and practice the Ice Heart Technique, and strive to cultivate it to a higher level, so as to increase the capital of self-protection.

The Frost Illusion Ancestor and Lu Yi left the Ice Palace and came outside, he instructed the six sons in front of Donald Ghost to let them adjust their state quickly, saying that Lu Yi had brought the necessary six drops of Jiao Clan essence blood, and he would improve them in the near future, and then he pulled Donald Ghost and left alone, I don't know if the two old brothers went to catch up or what they were doing.

Lu Yi instructed his people to rest and recuperate, and after a few words with Ling Luxue, he continued to cultivate the Ice Heart Technique without distraction, and the cultivation of the second layer was not difficult, it only took seven days for Lu Yi to completely master it, he did not attack the third layer, because the time was definitely not enough, the third layer according to the Frost Illusion Ancestor said that it would take more than ten years of effort, even if Lu Yi got the experience of the Frost Illusion Ancestor, it would take seven or eight years to do it. As for the fourth layer, the Frost Illusion Ancestor told Lu Yi that he was going to follow fate, and there was no accurate time as a reference, so he relied entirely on his own talent and luck. The Frost Phantom Ancestor used it for more than one hundred and thirty years, but he himself was an ice cultivator, and he was talented in cultivating the ice heart of the ice system, Lu Yi was a water cultivator, and it was already difficult to cultivate the ice technique, and the Frost Illusion Ancestor deduced that Lu Yi would not be able to do it without two or three hundred years.

Frost Illusion Ancestor and Donald Ghost didn't know what to do, everyone waited for ten days to see the two of them come back expressionlessly, as soon as Frost Illusion Ancestor came back, he asked Liuzi about his preparations, and after getting a positive reply that was ready, he let Liuzi and Lu Yi enter the Ice Palace with him, but did not invite anyone else.

"Doll, Donald is fine. It seems that the enemy should not have appeared. But just in case, I decided to get them up as soon as possible, and still in this isolated place. If the enemy can't hold their breath and appears, they will not be able to attack immediately, and when the time comes, as long as they dare to show their heads, Donald and I will clean them up. Frost Illusion Ancestor said to Lu Yi.

"Then should I inform my people and let them be careful?" Lu Yi asked.

"No, they don't know better, and by the way, check whether your people have ** indulgence. The Frost Illusion Ancestor waved his hand, "Let's start now, you should have practiced to the second level now, right?" Your spiritual power is already strong, I think the monks who are cultivating in the early stage of spirit building should have no effect on you using puppetry, but those who dare to come to the Chaos Sea to trouble the Jiao clan must not be a little minion in the early stage of spirit building, so your ice heart trick is just a psychological comfort, you don't rely on it too much, you still have to be more careful. ”

Lu Yi nodded, reached out and took out a golden vial, he handed it to the Frost Illusion Ancestor, "Senior, the essence and blood are all here." ”

The Frost Illusion Ancestor beckoned, the golden vial automatically flew into his hand, he opened the stopper of the vial, and a golden light shot out, he reversed the mouth of the bottle, and a drop of red but shining golden liquid slowly flowed out and suspended in the air, each drop of liquid revealed an inexplicable coercion, looking both sacred and mysterious. The Frost Illusion Ancestor waved his hand again, and the six drops of liquid were lined up horizontally, corresponding to the six sons who were standing far away.

"Go!" The Frost Illusion Ancestor waved his hand again, and six drops of essence blood flashed with golden light and flew straight towards Liuzi.