As for why it wasn't planted on other Evil Yin Spiritual Medicine, Jue Xing's soul memory indeed has the reason.
The reason is quite simple, because the Outer Demonic Pregnancy Demon True Technique naturally fuses within the Blood Corpse Mushroom, hiding itself more covertly, even the Sect Leader of the Outer Path Hidden Demon Sect tried personally but couldn't detect the true technique within it.
The only way is to carefully probe with the Divine Sense, seeking abnormalities, but the Blood Corpse Mushroom is inherently an evil object.
There are too many anomalies and malevolence within.
Moreover, the Blood Corpse Mushroom is the unique item of the Three Wonders Blood Corpse Sect, and there hasn't been any Heterodox Cultivator who specifically researched it before, who can assert whether its anomaly is normal or not? Hence, the Blood Corpse Mushroom is the best object for concealment.
