For thousands of years, things have changed, ups and downs are natural; Everyone enjoyed the fun when they got together, but they were sad when they left. What does this sign mean?

It is difficult for water to change with time. Also refers to the past time. The road can be luck or love, which is unpredictable. You don't have to be restrained, just let nature take its course. When you are together, enjoy all the people present. If you leave, you don't need to be too sad, everything will come naturally! Let it be.