Why did my friend write 发发发 on her note? Today I went to an ice-cream shop with my Chinese friend, and we wrote notes to stick on the wall.  My friend wrote:


开心、健康、平安、发发发
kāixīn, jiànkāng, píng'ān, fā fā fā

The first three items are ordinary well wishes, but I have no idea why she would write 发发发.  I asked her about it, but she couldn't explain it to me.
Question: Why did my friend write 发发发 on her note?
Searing for 发发发 at YouDao gives inappropriate suggestions, and it's not listed at Dict.cn, nor Line Dict, nor 小马词典.
发：Short for 发财，make a fortune，become rich。


Chinese people like to use reiterative locution to emphasize the strong meaning or wish. Other cases like: 好好好、 旺旺旺、棒棒棒、赞赞赞。
Sometimes you will also see 888 instead of 发发发，because 888(bababa) has similar pronunciation with 发发发(fafafa) and much easier to write/type.