[An oval-shaped purple stone: A stone of an unknown material. Other than its shape resembling that of an egg of some kind of animal, there seems to be nothing special about it.]
On his way to White Water Lake, Su Nan took out the purple stone, intending to study it.
Last time during his foreknowledge, his Qi Luck reacted first to this purple stone, even suggesting to him that it might not be a stone at all, which led him to doubt whether this stone might be a similar existence to the Dragon Turtle Egg.
To verify his theory, he could simply break the stone in his foreknowledge.
[You spent 1500 Demon Slaying Points to exchange a purple stone from the Governor Mansion's treasure vault. The stone has a unique shape, making you suspect it might be an egg. You decide to try to crack it open.]
[As you punched the stone, unexpectedly, it felt as if you were punching gold or stone. Your fist was unable to shatter the purple stone.]