When Xu Huo thought about objects that could alter properties, the first thing that came to his mind was the Nüwa Stone he had obtained from Clown City.
A tiny stone that allowed the King Fungus to grow rapidly on it, and although the King Fungus didn't grant limitless lifespan to its host and would die after a certain period, as long as one wore the Nüwa Stone, the King Fungus within the human body could reproduce endlessly, keeping the host permanently in a state with innate detoxification abilities.
However, he didn't wear the Nüwa Stone all the time; he only took it out to nourish the King Fungus periodically to ensure it didn't die.
"What can change the properties of a stone?" Xu Huo asked.
"The situation is complicated," Qing Cai looked him over, "but mostly it's due to special geological formations. After humans evolved, nature also evolved, so anything could happen. Are you really not a player from Zone 011?"