The Ghost Technique Qi Group is actually just a pictorial term.
This thing has another name, called "Netherworld Talisman."
Most Netherworld Talismans resemble pigeon egg-sized translucent gas clusters with blue air flowing inside, carrying a different kind of light and shadow from the Mortal World.
Chen Xu took a few in his hand and discovered that these things surprisingly also have entries.
[Netherworld Talisman, contains Wall-Passing Shadowless Technique. Crushing this talisman allows one to cast this technique within fifteen minutes. Or, throw this Netherworld Talisman into Midnight Rootless Water for boiling, combined with Spirit Roasting Eight Techniques, to obtain a bowl of Shadowless Soup.
Once consumed, it can transform the flesh into void, becoming a shapeless shadow, with a time limit of half an hour.]
Good stuff, Netherworld Talisman can actually be boiled!
Keep looking:
