Noviro
尘封
Simplified 尘封
Traditional 塵封
Pinyin chén fēng
Definition covered in dust; dusty; lying unused for a long time
这箱书都尘封很久了
Zhè xiāng shū dōu chén fēng hěn jiǔ le
These boxes of books have been dusty for a long time
You might also see
封
fēng
to confer; to grant; to bestow a title; to seal; classifier for sealed objects, esp. letters
HSK2
信封
xìn fēng
envelope
HSK3
封闭
fēng bì
to close; to seal off; to close down (an illegal venue); closed (i.e. isolated from outside input)
HSK4
封面
fēng miàn
cover (of a publication)
封锁
fēng suǒ
to blockade; to seal off; to lock down
密封
mì fēng
to seal up
封杀
fēng shā
to shut out; to block; to smother
封存
fēng cún
to sequester; to seal up (for safe keeping); to freeze (an account); to mothball