"This is?" Tenku looked at Wang Haotian and asked. Even though he could already guess what book it was, he still had to ask to be sure.
"As you can read from the cover, that book is the Spiritual Lord Heart Sutra. It was a practice from the Wang family and one of the Sovereign Cultivation Set." Wang Haotian replied.
"Sovereign Cultivation set? Didn't you tell me it only has three practices? Then why is there a fourth now?" Tenku looked at Wang Haotian and then Wang Hongli questionably. He pretended to be confused after hearing about it.
"I didn't tell the truth at that time, brat. The Sovereign Cultivation Set did have four books, but one was forbidden to practice because it was too difficult and dangerous. Not a single disciple of the Wang family had managed to learn it until now. Because of that, I'm telling you that the Sovereign Cultivation Set only has three books." Wang Haotian explained.