Wang's attention to detail also extends to choosing fish-safe paints and ensuring the ecosystem remains sustainable by maintaining proper biological cycles — where fish waste nourishes algae, and water plants photosynthesize and generate oxygen for the aquatic life.

The work proved to be a labor of love. "It has been a great decoration for my place. Whenever I see it after work, I feel relaxed," Wang said.

Compared with regular fish tanks, Wang believes his has a more therapeutical effect and can evoke positive responses in people who love aquatic animals, natural landscapes or animation.

When he posted videos of crafting the fish tank on social media platforms, such as Bilibili, they went viral.

"They received more than 1 million views in a short time and made it to the most-searched list in Bilibili's animal section," Wang said. "Many fans have since shown great interest and admiration for my ecological tank," he added.