They may not know it when they meet, but some people are like flowers blooming in March. They die early before you can appreciate them.
The snow in white clothes comes late and comes in a hurry, but once you are worried, you will send the old friend away. I'm afraid that before I have time to say goodbye, I will never see you again.
When they left, they may not know that some people are like the snow in winter. Before you can see the shape clearly and feel its temperature, spring is already blooming.