"Cough, cough..."


    Mu Xiangxue choked a big mouthful of Yuan liquid and stared at Su Chen angrily: "Lord, can you be a gentleman and don''t see that others are still sleeping beauty sleep? It''s hard for me to do so."


    "It''s not for you to purify yuan liquid. Just follow me."


    "No bleeding? That''s OK." Mu Xiangxue immediately cheered up.


    Su Chen quickly dived towards the bottom of Changqing lake and soon entered the area of toxic yuan liquid. However, with Mu Xiangxue, the toxic yuan liquid will not pose any threat at all. Su Chen is absolutely safe as long as she stays by her side.


    As the diving depth becomes deeper and deeper, the color of the surrounding liquid gradually becomes turbid. It is difficult to see the surrounding environment, and even the perception does not work. After all, there is a large amount of vitality around, and the interference is too strong.


    However, the treasure chest is right below. As long as you dive all the way to the bottom, you can find the treasure chest. It doesn''t matter if you can''t see it.


    "I''m a little scared." Mu Xiangxue hugged Su Chen and said.


    "You have purified so many fluids alone. What are you afraid of?"


    "That''s the upper layer. At least I can see the surrounding environment clearly, but I haven''t been to such a deep place. I can''t see anything. What if a monster suddenly pops out and swallows us."


    As soon as Mu Xiangxue''s voice fell, the surrounding water suddenly became turbulent. Su Chen frowned, and the Taiji fairy sword directly split out. Through the sword, Su Chen saw a huge water monster divided into corpses.


    "You crow mouth, say what you say."


    Fortunately, the water monster''s strength is not strong, otherwise Su Chen really has nothing to say.


    Mu Xiangxue was very funny, covered her mouth and resolutely stopped talking.


    After diving for several minutes, Su Chen finally landed.


    This is not the real bottom of Changqing lake, because there are many deep cracks around, and there are still a large number of Yuan liquids below. I don''t know where these yuan liquids will spread to the ground.


    But it doesn''t matter.


    Su Chen has seen the treasure chest.


    The texture of this treasure chest is obviously different from that seen before. The appearance is gilt gold, and the grade seems to rise a lot at once.


    "Why is there a treasure chest here?"


    Mu Xiangxue was stunned.


    Su Chen smiled: "it''s not very common to have a treasure chest in the deep sea."


    "Ha ha..."


    Su Chen shrugged and opened the treasure chest directly.


    A glow flew directly into Su Chen''s hand.


    It''s a big stone, glittering with many small luster, as if it were sprinkled with a layer of bright powder. It''s very heavy. A half meter high piece weighs more than 100000 kg, and the density is beyond imagination. It must be a top spiritual mine!


    Su Chen glanced over.


    "Super grade Star iron: it is the top quality of Star iron. It is the excellent material for casting artifact. The making method is very simple. Just inject the spirit into it and imagine the shape of the required magic weapon. The star iron can agglomerate and form itself (auxiliary materials can be added to mix to improve the quality of artifact)."


    It''s actually the material for casting artifact!


    This material is rare.


    Moreover, the biggest advantage of this star iron is that it is very simple and convenient to cast, and there is no need to refine it.


    It happened that Su Chen still had some immortal stones in his hand and a piece of heaven gold from the previous lottery. If you join them, you should be able to refine them into a powerful artifact.


    Su Chen used the mountain cutter in Baoxia island before. She felt very comfortable. At that time, Su Chen wanted to make a powerful mountain cutter for herself. Now she can finally get it.


    Put away the star iron. Su Chen is preparing to go back with Mu Xiangxue.


    Mu Xiangxue suddenly said, "I seem to have... Found the source of the poison that pollutes this Yuanye lake."


    "Huh? Where?"


    Mu Xiangxue pointed to a nearby slit and said, "the concentration of toxin in it is very high. All the venoms that pollute the lake should penetrate from there."


    Su Chen frowned, "can you stand it?"


    "It should be no problem." Mu Xiangxue''s tone is not very confident. After all, the toxin is the most violent she has ever seen in her life, which also contains some strange breath that is difficult to be strict. Even if she has a hundred flower holy body, she dare not guarantee it.


    Su Chen thought for a moment and said, "go and have a look. Be careful and approach slowly. If you have a problem, tell me immediately to take you away.


    "Good!"


    Mu Xiangxue also wants to explore what is under the slit. If the source of the venom can be solved, the purification of the whole Changqing lake will be much faster, and she can solve a lot of problems once and for all.


    With that, Mu Xiangxue cut his palm, released a touch of hundred flowers holy blood, condensed into a blood colored barrier and protected Su Chen.


    Now Su Chen is her umbrella. We must first ensure Su Chen''s safety before he can protect himself.


    They approached the slit carefully. Su Chen also sensed that there was a very strange smell, which poured out from the bottom of the slit.


    Su Chen felt it carefully, but the obstacle of Yuan liquid was still too big to feel the exact situation.


    The slit is just enough for one person to enter.


    Mu Xiangxue bit her teeth and decided to go in and have a look.


    Su Chen naturally followed boldly.


    After entering the slit, the strange smell became stronger and stronger.


    However, Su Chen didn''t respond to his danger prediction talent. It seems that there should be no danger for the time being.


    They were careful and moved towards the depth of the slit little by little. After about more than 100 meters, they suddenly opened up and entered an underground space filled with black yuan liquid.


    These yuan liquids are seriously polluted and extremely toxic. I''m afraid even Su Chen''s strong physique can''t resist without the protection of Baihua holy blood.


    "The source of the poison is here. Let''s find it." Mu Xiangxue said.


    Su Chen directly made a divine pattern, condensed it into a net and covered it in all directions.


    Soon, Su Chen found something.


    He found an old pottery pot!


    But Su Chen can''t get close. The toxicity is too strong. Even with the protection of Baihua holy blood, once he gets close, he will be in great danger.


    Su Chen tells Mu Xiangxue the location and asks her to move over.


    Mu Xiangxue was not afraid of the poison. She walked towards the earthen pot and directly reached out and groped.


    "I touched a bead, which is the source of the pollution yuan liquid."


    "Beads? Can you take them out?"


    "There should be no problem. The toxicity of this bead can''t hurt me."


    Soon, Mu Xiangxue picked up the beads together with the jar and put them into an empty storage ring.


    With the news of pots and beads, the toxicity of the surrounding yuan liquid immediately decreased by a large part.


    Under the purification of Muxiang snow, the surrounding Yuanye began to return to clarity quickly.


    Soon, it was completely purified.


    Mu Xiangxue laughed and said, "hahaha, without the pollution of this damn bead, with Miss Ben''s ability, the lake can be completely purified in a few days."


    "Don''t worry, go back and see what happened to the bead." Su Chen couldn''t wait to see the true face of the bead.