Everyone has an angel who has been guarding him / her. If this angel thinks that your life is too sad and your mood is too sad, then he will become someone around you, maybe your friend, maybe your lover, maybe your parents, maybe the stranger you just met once. These people appear quietly in your life , accompany you to spend a short period of happy time, and then he quietly left, so your life has a happy memory, even if your road is full of snow, but you can still remember the happy things, you can still be brave.