chapter 180 The best jade

S-level mission? In the previous S-level mission, they encountered an Earthly Immortal-level demon. What about this time? Apep Marks was also a little nervous. He asked: "What does it say above?" Wu Qingying said: "An underground structure suspected to be an ancient ruin was discovered in Eastern Siberia. Six expedition teams from various countries have entered it before and after, but they have not come out again. .” Apep Marks: "Is the mission issued by the state?" Wu Qingying shook...