move in on something/someone
phrasal verb with move verb uk/muːv/ us/muːv/
（为进攻或取得控制权而）移近，向…逼近
If you move in on a person or place, you come close or closer to them in order to attack or take control of them.
Government troops are moving in on the rebel stronghold. 政府军正向叛军的据点逼近。