Chinese has two words for sister.
If the sister is older than you (or is older than the person being addressed), sister is 姊姊. This is also written 姐姐 some times. It is pronounced jie3jie in Hanyu Pinyin.
If the sister is older than you (or is the younger sister in a family), sister is 妹妹. This is pronounced mei4mei in Hanyu Pinyin.
Older sister in Chinese characters is 姐姐(Jiejie).
It depends on what dialect you are speaking. Mei Mei is little sister in Mandarin Chinese.
Chinese is a bit more specific when it comes to people in our family. There are two ways to say sister in Chinese. Jie Jie (姊姊) means older sister while, if it is your younger sister it is mei mei (妹妹).
In Chinese, "sister" is spelled as 姐姐 (jiějie) for older sister or 妹妹 (mèimei) for younger sister.
The Chinese word for elder sister is "姐姐" (jiě jiě).
姐姐 [jiě jie]
The Chinese word for elder sister is: 姐姐 (jie3 jie3) or 大姐 (da2 jie3)
In Chinese, you can say "我爱你,小妹妹" to express love to your little sister.
There are many styles of Chinese. See related link.dì mèi
Little Sister
big sister
妹妹 (mei mei) meaning younger sister