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There is a huge secret hidden in Yangshan! When a luminous emerald beetle appears, brother Xiaoxia and sister Xiaoman follow it through a magical waterfall and enter an unimaginable "incredible factory"! Here, stones can make friends, Xiaocao is a powerful pharmacist, and even a heavy rain is the most efficient transportation team... It turns out that the entire world around us is a wonderful masterpiece of this factory. Come and join the brothers and sisters to explore the secret drawings of the operation of nature!