Of course, creating a Top Tier Secrets Martial Arts out of thin air is completely impossible. The most reliable method is to choose a Secrets Martial Arts from one's own knowledge and re-upgrade it. Chu Ming chose the Heaven-Burying Sword!
The Heaven-Burying Sword is a Sword Technique that Chu Ming comprehended when he advanced to the Life and Death Realm King. It's a High Tier Secrets Martial Arts and had significant utility during his breakthrough to Life and Death Realm King. However, as his strength grew, its usefulness diminished, and it has now become a burden.
Chu Ming chose the Heaven-Burying Sword because it was his own comprehension.
Upon choosing the Heaven-Burying Sword, Chu Ming entered closed-door training once more. Before attempting to create his own Top Tier Secrets Martial Arts, he first needed to meticulously reorganize his Sword Dao.
This reorganization took him ten days, but these ten days were well spent, more than enough to fill any gaps in his Sword Dao.
