"I want to walk around the lake. How about you?" Yan Chong thought for a moment and said to Maxim.


    "Me, too." Maxim nodded and took the instruments and bottles back into space.


    They walked on the grass by the lake.


    As he walked, Yan Chong carefully observed the Yuehua grass on the ground. At the same time, he turned on the "element vision" ability and paid attention to the distribution of elements inside.


    [element vision] strictly speaking, it''s not a skill. All skills need to consume mental energy, physical strength, Qi and so on.


    And element vision is like the rearview mirror of a car, it''s there. If you pay attention to it, you will find that you have both forward and backward vision. If you don''t pay attention, you will still have normal forward vision.


    It does not need to consume mental power, or in other words, the mental energy consumed is too small to check.


    Near the lake, there is almost a very light black element in the interior of the withered yellow Yuehua grass. Even if it is five or six meters away, there is a little bit of it.


    If Yan Chong had not observed carefully, it would have been easy to ignore it.


    "Black elements, should be dark elements." Yan Chong was a little suspicious, but not sure.


    Because the color of elements depends on the cognition of professionals, not the color of reflected light, it is directly perceived by mental force.


    Most people''s cognition of geomancy and fire is yellow, green, blue and red. Although black may be a dark element, black also represents a lot of situations, such as deep, unknown and unknown.


    It can be said that if a professional has not been exposed to certain elements, it is possible that these elements are black in his eyes.


    "Demonic cards can absorb dark elements. Is it related to demons?" Yan Chong can''t help but associate the two together.


    However, the devil card, just called the devil, may not have a half dime relationship with the real devil.


    Because it''s just one card in the source deck, and there''s also a card called angel in the deck.


    Demons, in the mainland has not appeared for a long time, although, the relevant legend has been circulated, the orcs also through some strange means to obtain the blood of the devil.


    As professionals above bronze level, they were much stronger than normal in physical fitness, and soon turned the whole Jingyue lake around.


    Along the way, they also met scattered college students, obviously also came to do the task.


    However, it is not necessarily the investigation of water pollution. There are some rare herbs by the lake, and many tasks are to collect these herbs.


    "Eh?" Yan Chong quickly walked a few steps, squatted down and carefully pulled out a 15 cm long green grass.


    At first glance, it is no different from the common Yuehua grass, but if you observe carefully, there is a light blue line in the center of the vein, which is a moonlight grass.


    It is mixed in a lush moon grass, very ordinary. However, in Yan Chong''s eyes, which opened the element vision, there is a distinct purple in the yellow and green, which is more abrupt.


    Two meters away, Yan Chong found another one and picked it again.


    Moonlight grass will die soon after it is pulled out, so it can be stored in the leaves of ancient elves. However, according to the knowledge of magic medicine, there are still requirements for its picking. The root system should be complete, otherwise its value will be greatly reduced.


    If you want to pick all this Yuehua grass, and then carefully pick out the moonlight grass among them, it is obviously not desirable. Because Yuehua grass itself has a chance to evolve into moonlight grass. Without a huge base, it will disappear.


    "What''s the matter? Any questions? " Maxim also picked some Yuehua grass along the way, which was supposed to be used as a sample. Seeing Yan Chong''s more targeted action, he could not help but come over curiously.


    "Nothing." Yan Chong shook his head. He did not want to reveal his ability to distinguish moongrass for the time being.


    After a careful observation of moonlight grass, he found that there was no black element in it. Yan Chong was slightly relieved.


    "Just now I saw some students from the Department of pharmacy also studying here." Maxim said, "look at them, there''s no clue."


    "If you encounter difficulties in your task, can you ask your teacher?" Yan Chong asked.


    "How to say, some tasks are actually issued to students by the college because they feel that the cost-effectiveness is low, and there is no need to send high-level professionals."


    "Of course, it''s a little strange this time. Jingyue lake is a very important place in the forest. It''s the first time I''ve heard that water quality has gone wrong. The school can''t ignore it."


    "That is to say," Yan Chong guessed, "maybe the college is helpless and can only release tasks and take a chance?"


    "Maybe, who knows." Maxim shrugged. Suddenly, he looked to the front left and called out, "Mr. Francis!"


    Yan chongxun''s reputation went. A middle-aged man with old-fashioned black frame glasses and a college formal dress - white shirt, brown vest and black trousers - came over. His hair was meticulously combed and his face was rigorous."It''s maxim. Are you here on a mission?" On hearing Maxim''s voice, he looked the same and nodded.


    "Yes, sir. I took on the task of investigating water pollution." Maxim stepped forward with an embarrassed look on his face.


    "Did you find anything wrong?" Asked Francis.


    "No


    "Don''t expect me to help you. The college asked me and other teachers in the Department to investigate at the first time. However, nothing was found." Francis shook his head.


    "The release of this task is actually to set up a research group in the college to gather interested students and teachers to study."


    "Because everyone has a hunch that this unknown substance that pollutes the lake is likely to be a rare new element."


    Said Francis, taking out some equipment and preparing to start the experiment by the lake.


    Yan Chong hesitated for a moment. He also came up and asked in a voice, "teacher Francis, is it possible that it is the devil''s reason?"


    Francis is holding his head low and fiddling with bottles and jars. Hearing this, he raised his head and looked at Yan Chong with a smile on his serious face: "this student is very imaginative. However, this situation has been ruled out by us."


    "You may not have been exposed to advanced potions? Universal reagent can detect the element deviation of water quality, and if the color does not change, it is possible - such as light and dark elements. "


    "However, the light and dark elements are special. If there are dark elements in the lake, as long as the light magic is injected, the universal reagent will change color, so that it can be detected."


    Yan Chong nodded and said nothing more.


    "It seems that the thin black lines are not dark elements."


    "Let me see the copy of rod''s invitation." Yan Chong suddenly thought of the new ability of silver eye, the copy of memory fragments.


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