Tomb of the Cursed Demon

Description
The Tomb of the Cursed Demon is the cause of the Seven Blades War in Joo Seo Cheon's last life. In his current life, he manages to kill off the Seven Star Division stationed there by the Dark Heaven Sect. He then explored the tomb, destroying all the traps, and gains Tai-E. Afterwards, he collapses the tomb to prevent exploration and the Seven Blades War for a while. The Dark Heaven Sect, eventually, used the Blood Monk's Blood Tendon book to replace the Tomb of the Cursed Demon as the cause of the Seven Blades War.

Items
Piles of Jewels and gold.

Many well-forged weapons like Swords, Axes, Spears, etc.

Tai-E: One of the Three Swords made by the Legendary Master  of sword-making, Ou Yezi, for the King Goujian of  Yue.

The Nine Wrath's Martial Arts: Also known as Nine Wrath's Essence, it is a Martial Art as old as the 6 Great Golden Martial Arts. This forbidden book, that even the author didn't know the purpose of, was created in Zhongyuan during the Xia Dynasty. It was assembled as a collection of spells, rather than a collection of Martial Arts Techniques. Later, when the Xia Dynasty started to fade away, the nine Wrath Essence's trail was concealed. After countless years, a Scholar discovered a copy of it by chance, transferred a part of it, and gained a portion of its power. It was a technique that borrowed strength from beings in hell. Hence, the name, the Nine Wrath's Martial Arts. The Nine Wrath's Martial Arts is a simple technique. If it is practiced, the person's physical abilities multiply. They will gain herculean strength and amazing regeneration skills. The skills of the Great Devil in Hell. But, that's only temporary. In less than a month, the practitioner's body completely transforms. Or more accurately to say, their species totally changed. Strength is given, but the Practitioner begins to resemble a devil. Finally, during the last stage of the transformation, they turn into a devil entirely. Their humanity slowly starts to disappear till they eventually become inhuman.