Chapter 321: Soul Knife, Soul Mirror, Returning Ruins Sword Formation_3

During this time, he only went out once to renew the lease on the cave mansion and paid the necessary Spirit Stones. Then, he returned to the cave mansion, removed the Nine Heavens Thunder Spirit Formation, and set up a new array.

The Nine Heavens Thunder Spirit Formation was indeed a Fourth-Stage middle-grade Array, but it could no longer keep up with Han Yi's rapid progress in the cultivation realm.

In one of his Qiankun Rings, he obtained a new type of formation. To be accurate, it should be called a formation diagram.

A formation diagram is a kind of half-finished product of a formation, which still requires weapons connected to the formation diagram to form a complete array.

The most famous one Han Yi knew was the Exterminating Immortal Sword Array. This sword formation was composed of the Immortal Slaying Array Diagram and four fierce swords, capable of slaying immortals and exterminating gods with its formidable power.

However,