He gave one of the two geese an 'original' crystal core and the other a crystal core that had been purified by soaking in spiritual spring water.

A few minutes later...

The goose that ate the purified crystal core was drooling uncontrollably.

The one that ate the original crystal core rolled its eyes, its pupils turned white, and it became a standard zombie eye.

After collapsing and convulsing a few times, it completely turned into a zombie.

He was simply held in place by Li Xin'er and unable to move.

Li Xin'er turned her attention to the other one, which went from drooling to spitting out water...

The big white goose was so frightened that it turned cross-eyed and looked rather dim-witted.

A few minutes later, the white goose visibly grew stronger and stronger, its size comparable to that of a fighter jet.

Li Xin'er loosened her control over it and tried to communicate with it.

"Spin around in place."

The big white goose rolled its eyes and obediently did as it was told, tilting its head to look at Li Xin'er, seemingly with a hint of ingratiation.

Li Xin'er used her mind to conjure a bowl of spiritual spring water. The big white goose stared at the bowl in her hand, its mouth almost watering.

"Show me your superpowers."

As Li Xin'er spoke, she deliberately raised the bowl away from it.

The white goose reacted for a moment, then wiggled its rear end to change direction, stretched its wings, and stretched its neck, its long yellow beak like a faucet, from which a stream of clear water poured out.

Li Xin'er was now satisfied. Just as she had thought, the purified crystal core could awaken supernatural abilities; she just didn't know what the probability was...

We need to find more crystal nuclei and conduct more experiments to confirm this.

Li Xin'er put the bowl down.

From now on, you'll be called Iron Pot.

The white goose's entire focus was on that bowl of spring water; it wouldn't mind being called braised goose...