be reduced to ashes ? 若飛同志看著那些文件已～，轉(zhuǎn)過(guò)身來(lái)，……(楊植霖《王若飛在獄中》17) Making sure that the documents had been reduced to ashes,Wang turned round，…
化為灰燼huà wéi huī jìn
變成一堆灰土。比喻徹底燒光。turn to dust and ashes, burn sth. to ashes, reduced to ashes, go up in flames