Before the construction of Seoul Subway Line 7, the station's name was officially Chongshin Univ. Station. However, after the construction of Line 7, Seoul Metro changed the name of the station to Isu Station and
Namseong station became Namseong (Chongshin Univ.) Station because Namseong station is much closer to Chongshin University. The university sued Seoul Metro because the university wanted to express their school name at a transfer station to publicize their university. Although the university had lost their suit, the decision was reverted due to the university's violent protest. Therefore, Isu station currently holds two different names depending on the subway route, "Chongshin Univ. (Isu) station" for Line 4 and "Isu station" for Line 7. Then in 2019, the Line 7 station got renamed from "Isu station" to "Isu (Chongshin Univ.) station". ==References==