If you're referring to the name "Lily":
* 莉莉 (Lìlì) This is the most common way to write the name "Lily" in Chinese. It's pronounced "Lee Lee."
If you're referring to the flower "Lily":
* 百合 (Bǎihé) This is the general term for "lily" in Chinese. It literally means "hundred unions" and refers to the flower's many petals.
If you're using "Lilly" as a nickname for a person named "Lily":
* You could use the same pronunciation as the name, 莉莉 (Lìlì), even if the name is spelled differently.
It's important to consider the context and what you want to communicate when choosing how to say "Lilly" in Chinese.