This is a book that claims to be "invincible", but it has nothing to do with invincibility at all.

It was left by the first person in the other world, "Huanglongzi", and was left to the first Huanglongzong in the world.

However, the Huanglongzong has declined step by step because of the "Invincible Heart Sutra", and its existence, for thousands of years, has pitted countless talents of the Huanglongzong.

And the last person to be cheated was Zong Zuo, and it was precisely because of Zong Zuo that "Invincible Heart Sutra" fell on the protagonist.

The same secret book, in different worlds and different people, shows its different sides.

......

It's just that what is the true meaning of the "Invincible Heart Sutra"?

The protagonist seems to have comprehended the "Invincible Heart Sutra", but is his comprehension really correct?

The first center of gravity is invincible, which requires that the cultivator has no negative emotions in his heart.

The second level is now invincible, requiring that no one have negative emotions towards the cultivator.

......

"The Invincible Heart Sutra" achieves the protagonist at the same time, but it also firmly confines the protagonist to a cage.

If a person has no negative emotions in his heart, others have no negative emotions towards him at the same time.

Then such a person is undoubtedly really an "invincible" person, but what is the point of such invincibility?

And what about the protagonist?

Is it to be a good gentleman who follows the rules, has no distractions, and never offends anyone, or breaks the cage of the "Invincible Heart Sutra" and becomes a real free man?