Ping Pong Fish Quest & Mermaid Necklace

Ping-pong Fish -

Go to Snow City Pet Store and click on Huahua (23,11), he will ask you to
rescue a level-1 Jingle from the hell.

Then go to Spiky Hell, catch a level-1 Jingle, and give it to Hua-hua.
He will give you a Mermaid Necklace.

Finally, go to Sand City Pet Store and speak to Little Fairy (11,18). She will
give you a level-1 Ping-Pong Fish if you agree to give her the Mermaid Necklace