Inside the secret cultivation chamber used by Prince of Shicheng Hua Tianxiong, the concentration of spiritual energy was twice that of other chambers in the Cultivation Area, and forty times that of the space outside the Star Realm Cauldron. It wasn't that Prince of Shicheng Hua Tianxiong didn't want to increase the density further—after all, his array-crafting abilities were sufficient at this point, and he had plenty of Spirit Stones—but his physical body simply couldn't handle it.
When all was said and done, Prince of Shicheng Hua Tianxiong's cultivation level was still a bit too weak, sitting as he was merely at the Peak Tier 6 Great Martial Master stage. Consequently, the total amount of spiritual energy his body could assimilate was limited. If the concentration were any higher, he would experience a sensation akin to oxygen intoxication, which would be detrimental to long-term cultivation.
As for the training in the "Miao An Shang Fist", it also required sixty hours. After all, without the accumulation of time, progress in the "Miao An Shang Fist" could not possibly improve. Even so, this was thanks to Prince of Shicheng Hua Tianxiong's exceptional cultivation aptitude, combined with his practice of the "Condensing Spirit Technique", which massively boosted his spiritual power and allowed him to comprehend various techniques and martial arts with extreme swiftness.
Chapter 628