围师必阙 (圍師必闕) wéi shī bì què

wéi shī bì què phrase when you surround soldiers an opening must be left
Domain: Literary Chinese 文言文
Notes: Quote: from the Warring States period text 孫子兵法 “Art of War” by Sunzi, section 7 (Amies 2021 tr.; see also tr. by Giles 1910, p. 68)