Chirri & Chirra: Underground 叮铃和叮铃铃:一起去地下 by Kaya Doi

A warm magical adventure, translated to chinese, from a japanese author/illustrator.

In their fourth adventure, Chirri and Chirra discover a network of tunnels behind a hole in their basement wall. Join them as they visit moles, discover caves full of glowing flowers, poke at the roots of growing plants, traverse a subterranean lake, and spend the night with a family of badgers! The fourth book in the Japanese Chirri & Chirra series, this underground adventure is sure to charm and delight.

Suitable for 3-6 little tots.