leave nothing usable to the invading enemy

leave nothing usable to the invading enemy

"Empty room and clear field" is a word, which comes from the biography of Xunzhou in the annals of the Three Kingdoms.

During the war, the property of the people's families and the agricultural products in the fields were collected, and the houses and trees near the battlefield were destroyed, so that the invading enemies would not plunder or use them. "Room" is also called "shed". The pronunciation K ō ngsh ì Q ī ngy ě is from the biography of xunzhuan in the history of the Three Kingdoms, Wei Shu: "today, all the East has harvested wheat, so we must be strong and clear to wait for the general." Along the way, the GUI army had to make a living by plundering, and the military discipline became more and more lax. Chapter 39 of the spring and Autumn Annals of the Republic of China by Liu Fengwu