The shape of the third fish tank was a little special: It was flat and wide with nothing inside except for a thick ice floe.
Zhang Zian squatted down and looked up at the bottom of the ice floes; the secret was there.
The bottoms of the ice floes were like a beautiful flower, gently drifting along with the water's flow. But the flower was far from slender and under the illumination of the faint light on the surface of the ice, it became ice-like and crystal clear, almost transparent. There were only a few of such "flowers," and all of them were rooted in the ice, making one wonder if they were animals or plants.
On the beach in Germany, when Zhang Zian captured the mermaid with his phone, a large number of weird creatures retreated from the beach like low tide. There was also a layer of drift ice that slowly crept up. When he flipped the thin layer of ice over with a tree branch, he found the same strange creatures on the back of the thin ice.