Although it was only a hidden branch, the meaning was completely different. In the past, The Guardian branch was called a Guardian, but in fact, they were nannies or servants! Now that he had become a member of the hidden branch, no matter what, he had obtained their recognition and had become one of their own.
In the past, the line of guardians did not have any complaints, but after becoming an immortal, who would not yearn for freedom? Immortals nowadays had many choices, whether they wanted to stay in the eight desolate universe or submit to the universe, and they lived carefreely.
