In Taoism, the Tao, or Way, can be understood in many ways. One meaning of the Tao is that it is the way of the universe.
The universe lasts forever.
Why does the universe last forever?
It is unborn,
So ever living.
Many aspects of the universe – such as our water cycle – are cyclical, always beginning, always ending. Choose some aspect of the universe. Explain it in terms of an unending cycle.