Light is something we take for granted, but in the bottom of the forest, some lights are still a mystery. From fungi to scorpions, there are so many secrets of light we still don't know. Guided by the gleam of the fireflies, let's discover the the glorious world of light.

Watch more:

Fireflies episode 3: The hunting world

Fireflies episode 2: The master of disguise

Fireflies episode 1: The hostile forest for the fireflies

(Cover image designed by CGTN's Qu Bo)

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