Edge paper.
Destiny is like a piece of white paper. Although fate is destined by God, when fate first comes, it is like a piece of white paper without any impurities. It is very clean and pure.
When two people who are destined to meet meet, it is like drawing on a white paper of fate. It may be vulgar and unbearable, it may be elegant and difficult to understand, or it may be like a meteor falling, shining like a star at first, and dim like a candle in the end.
All of this is something we ordinary people cannot predict.