Late at night on January 15, the maintenance workers were working feverishly to inspect and maintain a train of high-speed trains. The institute is responsible for the maintenance and repair of some h ...

随着特朗普（Donald Trump，川普）在美国总统选举中获胜，全球对于源自韩国的“4B运动”关注度飙升。但为什么有些女性选择追随当中的四大原则——不发生性行为、不约会、不结婚、不生育呢？