焦土

zhè gōng diàn bèi shāo chéng le yī piàn jiāo tǔ

这宫殿被烧成了一片焦土。

The palace was burned down.

shí xíng jiāo tǔ zhèng cè

实行焦土政策

conduct scorched earth policy

xǔ duō jiāo tǔ huī jìn bèi qīng chú yī kōng

许多焦土灰烬被清除一空。

Much dirt was cleansed away.