It is well known that the crystal comes from the vein.

but how is the vein formed?

few people really know the principle. Qi Tian is one of these few people, and he knows it because of the Sirius mine.

after being attacked by a large number of Chalkiness in Jianzong Sirius mine, Luo Lin decided to set up a super array of "ten thousand swords array" for defense in order to prevent being attacked again. Because the power of the "ten thousand swords array" has a great connection with the cultivation of the people in the main array, Qi Tian was caught by Luo Lin and made a free...