If we want to see a green, clean, beautiful environment, we must have self-awareness such as: do not throw rubbish into ponds, lakes, rivers, streams, ... not to cut down forest trees so as not to flood and drought. , do not dispose of animal carcasses indiscriminately, ... In general, we must protect the living environment that is being encroached on by humans, but if we contribute to it, the environment will be clean and beautiful.
