蕩然無存

荡然无存
dàngránwúcún
  1. to obliterate completely
  2. to vanish from the face of the earth

CEDICT

to completely disappear or be destroyed and no longer exist

Wiktionary

原有的事物完全毀損。

重編國語辭典

Entry Composition

1 蕩然 dàngrán
  1. vanished from the face of the earth
  2. all gone
  3. nothing left
2 無 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
3 存 cún
  1. to exist
  2. to deposit
  3. to store
  4. to keep
  5. to survive