"Dew in the morning" describes the dew on the morning flowers, suggesting that some beautiful things in life, just like these dew, can make people feel the wonderful life for a short time. These things are limited and precious. "There are stars in a clear night" expresses the brilliance of the stars in the clear night sky, which is similar to the morning dew, implying that there are many short and beautiful moments like stars in this life that we need to cherish and experience.
We should cherish every moment in life, enjoy them and don't waste them. Especially those short and precious moments, we should cherish them and don't let them lose their original value and significance.