Depicted in the portrayal demonstrates a common but thought-provoking situation: sitting on a small boat, two visitors are discarding rubbish into the river with already a plenty of litter flowing behind. The caption below the drawing indicates that: after the journey.

Conspicuously, the painter attempts to demonstrate that protecting the ecological environment is of paramount significance, be it in both individual growth and social sustainable development. For one thing, protecting the ecological environment is remarkably beneficial to our physical health, which safeguards us from being clouded with various disease. A substantial body of research has proven that those living in a better living habitats are more likely to relish a sound and joyful life. For another, preserving the ecological environment provides a better living environment for the next generation, contributing to the long-term development and prosperity of humankind. As a matter of fact, it is our joint...