The simplest way to write the word Cai is to combine "blessing" and "sacrifice" and write it in one stroke. The specific steps are as follows:

1. Write "Damn", which is a cursive prefix and can be done in one go.

2. Then write down "sacrifice", which is the end of a sacrifice, or it can be done in one go.

Through the above two steps, you can finish Cai's writing in one stroke, which is concise and beautiful.