After a while, the blacksmith and another big man held a large piece of black metal and placed it beside the stove. Just heard a bang, and the whole stove was shaken up, and the sound was very crisp.

Dark iron is a very rare metal, the color is dark black, faintly transparent red light, extremely heavy, high melting point, magnetic, after the opening of the iron like mud. It is the best material of all the refining metals.

After Feng Yushi saw this piece of black iron, she stroked it gently, looked at Yun Hui with bright eyes, and exclaimed, "Master, where did you get such a treasure?" I won't even tell you. ”

Yun Hui shook her head slightly, "If I let you know, you and your sisters haven't all fried up!" haunts me every day. ”

Feng Yushi touched her head with a red face, immediately turned her head to Xuantian, patted him on the shoulder, and said, "My master used such a good thing to refine the weapon for you, what are you still doing there, don't you thank you quickly!" ”

Xuantian immediately reacted, bowed and said, "Xuantian is grateful to the Cloud Gate Lord for his love, but... Cloud Gate Lord, what do you mean when you say you want to build me a real light sword? ”

Yun Hui said with a smile: "You are the true qi of the fire attribute, and you have also reached the realm of creating fire out of nothing, you should know." With the different temperatures, the color of the flame is also different, and the energy and heat emitted are also worlds apart. ”

Xuantian nodded and said, "I have heard Master say that the general flame is red, but as the heat increases, the color will also change greatly. From top to top, yellow, cyan, and purple. ”

Yun Hui nodded slightly, and said slightly: "Although among the five elements, water can overcome fire, but if an attribute breaks through the scope of nature, it can be reversed. If you can cultivate the color of the flame to yellow, you can compete with water, and if you can reach above yellow, then you can completely defeat the water attribute. But..."

"However, as the temperature rises, the human skin cannot withstand such a high temperature, and even if you practice this superior exercise, you will not be able to exert it." Xuantian took Yun Hui's words and said softly.

Yun Hui snorted, and then said, "However, Shangguan Ling Wei of the Hongxing Sect can withstand such a high temperature. ”

Xuantian was startled for a moment, and hurriedly asked, "Why?" ”

Yun Hui replied, "Because the Hongxing Sect has their secret internal strength method, it is determined to burn the heart. ”

"Heart-burning..." Xuantian read softly, and suddenly asked loudly: "This heart-burning decision, is it the secret heart decision of the Hongxing faction?" ”

Feng Yushi saw Xuantian's reaction so violently, and said suspiciously: "That's right! Everyone knows about this matter in the world, and it's not a secret, so why should you be so surprised. ”

After hearing Feng Yushi say this, Xuantian hurriedly explained: "No, no, I'm just a little... It's a little bit..."

Xuantian didn't say anything, just stood there and kept giggling. Feng Yushi didn't know which of his scriptures was abnormal, so she ignored him, turned her head to Yun Hui and said, "Master, it seems that this stupid boy doesn't know about this, you better give him a make-up!" ”

Yun Hui pinched Feng Yushi's little face, and said helplessly: "Looking at you like this, is it possible that I am afraid that I will not tell him." ”

Feng Yushi turned her head away and stopped talking, Yun Hui took two steps forward and began to tell the system about the unique secret technique of the Hongxing Sect.

Although among the four major sects, the people of each sect will use the Five Elements True Qi, but each sect has the kind of True Qi Gong that they are best at.

The Hongxing faction is best at the practice of fire and true qi, and there is also the secret technique of burning the heart. This heart-burning is not to burn one's own heart as literally it means, but to protect one's heart with a special kind of true qi.

After cultivating this kind of heart determination, he can transform the fire attribute true qi into a special power that wraps his heart. When the heart is wrapped in this special true qi, the fire true qi emanating from the heart will naturally be transformed into this special true qi and radiated throughout the body.

When the internal organs and skin of the whole body are filled with this special fire true qi, the body will no longer be easily burned by the high temperature, and at the same time, it will be possible to cultivate that kind of high-temperature flame. The higher the level of cultivation of the Burning Mind, the stronger the heat that the body can bear.

Of course, it is not so easy to cultivate this kind of internal strength, if you don't control it well, not only will you not be able to protect your heart, but on the contrary, it will burn your heart to ashes. In the Hongxing faction, I don't know how few people have sacrificed their hearts for this, so this kind of internal strength is called heart-burning.

Since the inheritance of the Five Tigers Soul Breaking Spear was monopolized by the Shangguan family, this heart-burning decision was also monopolized by the Shangguan family, and it became their family's secret internal strength.

Xuantian stood in place, his head down, his eyes staring blankly at the ground, not knowing what he was thinking. Feng Yushi slapped his head sharply and scolded, "You don't listen carefully to my master, what are you thinking there with your head down?" ”

Xuantian raised his head and looked at Feng Yushi in a trance, then looked at Yun Hui again, and said softly: "No... I didn't think about anything, I listened! ”

"Do you have something on your mind?" Yun Hui looked at Xuantian, who was in a trance, and asked worriedly.

Xuantian immediately shook his head and said, "No, no, you continue to say Cloud Gate Master." ”

Yun Hui continued: "This is the unique secret technique of the Hongxing Sect, which can maximize the power of the Fire True Qi, so at present, in the human world, if you want to say who has the best use of the Fire True Qi, it is their Shangguan clan that immediately comes to mind. ”

"That's right, like people from other sects who have the true qi of the fire line, they don't need to burn their hearts, and it's already very good to be able to use a line of lightsabers like you. But for Shangguan Lingwei, it was a piece of cake. Feng Yushi said to Xuantian.

Xuantian touched his head and said with a smile: "Yes! Hahaha! ”

"Even so, I heard Yushi say that your hands will still hurt. That's why I came up with the idea to create a weapon for you that can wield the Light Saber. ”

After listening to Yun Hui's words, Xuantian was still confused, what did this light sword have to do with weapons. Then he asked suspiciously: Cloud Gate Lord, among the five elements, Huo Kejin, you also know the power of this light sword, how can it match with metal?

Yun Hui said with a smile: "Fire can fight with water when it reaches a certain level, and it can even complete a reversal, so when gold reaches a certain level, can't it be compatible with fire?" ”

Xuantian thought for a while, and said ashamedly: "Xuantian is stupid, please ask the door master to make it clear." ”

Yun Hui told Xuantian about the mystery of this······.