In other words, as long as one has Qi, they can inversely impact their physical body, constructing a body that suits the execution of secret martial art techniques. Southern Dipper Red Vulture Fist and Southern Dipper Sonic Serpent Fist are both pure ancient boxing methods without the usual secret martial arts training methods.
Hence, they are the easiest to replenish.
One just needs to remember the state within their Qi, repeatedly unblock the Southern Dipper acupuncture points in one's body, and build several virtual meridians. Deathfang Power and Echo Strength will naturally form.
As for the Demon Idol martial art, it is indeed a bit weakened.
After all, Casio's second Golem Heart and the 3D illustration of the Demon Idol's blood circulation were born under coincidental circumstances.
They were forcibly extracted from the Demon Idol itself.