The difficulty in obtaining the four keys of Heaven, Earth, Mystery, and Yellow is not low. The higher the level, the exponentially harder the challenge becomes.
On the Bisite Planet, numerous martial artists enhance their strength by acquiring Ghost Soul Bubbles.
Those with lesser strength, at the Martial Arts Perfection Realm, can only aim for the Yellow-level keys.
Those with average power can obtain the Profound Level key.
The elite among the Martial Arts Perfection Realm have the opportunity to reach for the Earth-level and Heaven-level keys.
As for the top tier experts who acquire all four keys of Heaven, Earth, Mystery, and Yellow, in the hundreds of years Mr. Ke has guarded the Mande Cave, only two have succeeded.
The strongest on the Bisite Planet: Luojia and Yan Qiushui.
"Master Xiyue, with your strength, reaching for the Heaven-level key shouldn't be difficult."
