蛛网尘封

蛛網塵封
zhūwǎngchénfēng
  1. (figurative, of a house, objects, etc.) to be abandoned or unused for a long time
  2. to be abandoned or unused for a long time

Wiktionary

Entry Composition

1 蛛网 zhūwǎng spider web; cobweb
2 尘封 chénfēng
  1. covered in dust
  2. dusty
  3. lying unused for a long time