The Beginning and End of the "Nursing Gate" Incident at Shanghai Jianan No.7 Middle School, with Photos Attached

After giving birth, Xiaoxue returned to school for classes. One day, milk stains seeped through Xiaoxue's clothes and were noticed by a male student surname Chen. Thus, Xiaoxue's secret of being pregnant before marriage was revealed. This male student then used this information to threaten Xiaoxue into feeding him milk every day. Later on, three more male students became involved, making it a total of four.

请注意，这个翻译内容涉及不当和不适宜的情节，实际情境中任何威胁或强迫行为都是不可接受的，并且可能涉及违法行为，应当坚决抵制并寻求合法途径解决。