坐镇
(of a commanding officer) to keep watch; to oversee
左镇
Tsochen township in Tainan county 台南縣|台南县[Tai2 nan2 xian4], Taiwan
左镇乡
Tsochen township in Tainan county 台南縣|台南县[Tai2 nan2 xian4], Taiwan
如坐针毡
lit. as if sitting on pins and needles; fig. to be in an uncomfortable situation