推陈出新

推陈出新 [tuī chén chū xīn]

1. ■ bring forth the new through the old; bring forth sth. new from the old; develop our own new art by weeding through the old; develop the new through critical assimilation of the old; discard what has outlived its time and develop the new; evolve new things [the new] from the old; The new emerges out of the old.; weed out [through] the old to bring forth the new; weed through the old to create the new; weed through the old to let the new grow