Lin Feng carried the iron box on his back and had this iron box to protect his body.


    He can also rest assured that even the creatures in the black fog are afraid of this iron box. It can be seen that the iron box is extraordinary.


    "What is the origin of the broken corpse contained in the iron box? It makes the creatures in the black fog so frightened?". Lin Feng couldn''t help talking to himself.


    The demon king looked surprised and said, "can''t it be something left from the last era?".


    "This...". Hearing what the demon king said, Lin Feng was also shocked. Some didn''t know how to answer the demon king''s words.


    If it''s really something left over from the last era, it''s more extraordinary than you think.


    Now this iron box is equivalent to an amulet.


    Lin Feng walked carefully to the depths.


    After the creatures in the black fog left, the magnetic field here also dispersed.


    Lin Feng easily walked out of that passage.


    After walking out of that passage, a second tomb appeared in front of me. 999 coffins were also placed in this tomb.


    The coffins placed in this tomb are all wooden coffins.


    "There are iron coffins in the first tomb! Here are wooden coffins, and they are 999. What does it mean?".


    Lin Feng frowned. He always felt that it was full of strange places, but he couldn''t tell where it was strange.


    "There''s still a passage, keep walking!" said the demon king.


    Lin Feng nodded and continued to walk inside.


    The iron box is extraordinary. Since Lin Feng carried the iron box on his back, he has been relatively safe without any danger.


    Perhaps there are some terrible creatures dormant here, but after seeing Lin Feng''s iron box, those terrible creatures did not appear.


    Lin Feng continued to walk inside, and soon he came to the Third Tomb.


    The third tomb was the same as the first two, with 999 coffins.


    But the coffin in the Third Tomb is an ancient bronze coffin.


    "Bronze ancient coffins are rarely seen outside, because such coffin materials are difficult to find. I didn''t expect that there are so many bronze ancient coffins here!"


    Lin Feng said in surprise.


    Bronze ware is a symbol of an era. The opening of the great bronze age plays a connecting role in the world of practitioners.


    It was also the beginning of the bronze age.


    Only the monks in the world of cultivators know how to refine various materials and forge magic weapons.


    The opening of the bronze age marked the end of the stone age.


    The world of practitioners has officially entered a leap forward.


    As the earliest magic weapon made of metal, bronze is very powerful.


    It''s just that the materials are too difficult to find.


    So bronzes are rare.


    In the past years, even if we found bronze, we would create magic weapons. Who would waste so precious materials to create so many coffins?


    But now there are 999 coffins made of bronze, which is really shocking.


    "It''s a terrible thing. I really want to put away all these bronze ancient coffins and forge magic weapons after melting...".


    Lin Feng muttered.


    The demon king couldn''t help turning his eyes and said, "the bronze ancient coffin is strange. If you really dare to do so, you''ll be afraid of dying at that time!"


    Lin Feng said, "I just said it casually, but I really want to open a few coffins and see what''s inside!"


    The demon king said, "don''t open it for the time being. Wait until you explore the tomb again and then talk about opening the coffin!"


    Lin Feng thought for a while and thought it was reasonable. Now the variables of opening the coffin are too big. Who knows what will happen later?


    Lin Feng continued to walk inside. Before long, he reached the fourth tomb. After arriving at the fourth tomb, Lin Feng was even more shocked.


    There were 999 sarcophagus in the fourth tomb.


    Sarcophagus inherited from the stone age.


    It is rarer and more precious than the bronze coffin.


    The great emperor found a sarcophagus to bury himself, but it was difficult to find the whereabouts of the sarcophagus.


    There are so many sarcophagus here.


    It''s so shocking.


    "There are 999 iron coffins in the first tomb!"


    "There are 999 wooden coffins in the second tomb!"


    "999 copper coffins appeared in the third tomb!"


    "There are 999 sarcophagus in the fourth tomb!"


    "The number of coffins in the four tombs is the same, but the materials are different. What''s the secret?".


    Lin Feng frowned and thought. He always felt that it was not easy.


    "Go and see if there is a fifth tomb!"


    Said the demon king.


    Lin Feng nodded. He planned to look for the fifth tomb.


    A dozen passages are connected in the fourth tomb.


    Lin Feng chose a passage to enter it, and then walked through it.


    With the deepening, Lin Feng found that there were more and more forks in the channel.


    The tomb seems to have become a crisscross honeycomb.


    It''s like a maze. It''s easy to get lost in it.


    Lin Feng walked for a long time and couldn''t come out.


    "Natural maze......".


    Lin Feng frowned.


    The tomb was so strange that it formed a natural psychedelic array and trapped him here.


    "Whoosh......".


    Suddenly, a shadow flashed in front.


    Lin Feng was surprised.


    The shadow just passed through the passage in front of me, and it was very fast.


    "What?". Lin Feng was surprised and quickly chased out.


    But the figure disappeared.


    "What a familiar feeling...".


    Lin Feng couldn''t help frowning. The figure that just flashed away made him feel familiar. This feeling is really strange.


    Lin Feng continues to look for a way out here.


    Soon after, he saw the figure again.


    The mysterious existence seemed to have found Lin Feng and quickly swept away into a nearby passage.


    "Don''t run...".


    Lin Feng quickly chased after him with an iron box on his back. If he met any terrible creature.


    The iron box is enough to scare the other party back.


    The mysterious statue existed quickly and flexibly, shuttling through various channels to avoid Lin Feng''s pursuit.


    Lin Feng almost caught up with the statue several times, but each time he ran away.


    "I can''t see it, but I''m sure it''s a person. How can it give me a familiar feeling more and more?".


    Lin Feng couldn''t help muttering.


    The mysterious existence was shrouded in a dazzling light. He was deliberately covering up everything. Lin Feng could only see a vague outline and could not see his true appearance. Therefore, he could not determine who it was.


    However, the existence of that statue makes Lin Feng have a feeling of deja vu, and this feeling is constantly improving.


    Lin Feng found the statue again. He quickly chased it. The mysterious existence was very fast and got rid of Lin Feng again.


    This makes Lin Feng very depressed.


    "Ah... Mom... Help...". At this time, a cry of panic came out of the distant passage.