To become a King-grade Artifact, the artifact spirit must break through to the soul spirit of a seventh-grade living being. A seventh-grade living being is an existence on par with Peak Inquiry powerhouses.
Many soul spirits possess growth potential, such as the ability to devour souls and spirits. Even in a lower plane, if they encounter a great opportunity, it is possible for them to break through to the seventh grade.
To wield a King-grade Artifact requires a force superior to the power of rules. However, because it is a seventh-grade artifact spirit, it possesses high intelligence, autonomous consciousness, and the ability to operate on its own. With the help of Old Turtle, Zhou Chuan established a blood bond and a close connection with the cuckoo sword.
Chapter 713