to its original shape and appearance
The old as new is an idiom, and the pinyin "Zhangji ù R ú x ī n" means to repair the old and damaged things to make them as new.
explain
Repair old and broken things as if they were new.
source
The 63rd chapter of journey to the west by Wu Chengen of Ming Dynasty: "the traveler sweeps the thirteen storey pagoda layer by layer with zhicao This is the way the old is as good as the new, with thousands of rays and thousands of auspicious spirits. We can still see it from all sides and see it from all four countries. "
usage
Used as a predicate or object; used in dealing with affairs
to its original shape and appearance
return after victory in war to the imperial court to report his meritorious services - dé shèng huí cháo
befuddle the minds of the public - xiáo luàn shì tīng