As slang, 集美 is a cutesy homophone of 姐妹 (sisters) popularized on Douyin and Xiaohongshu by beauty and livestream hosts around 2020. Informal only - don't use it in writing or with older speakers.
culture
集美区 is a district of Xiamen in Fujian, home to Jimei University and the hometown of educator and philanthropist Tan Kah Kee (陈嘉庚).
