替古人擔憂

to fret over the worries of long-departed people (idiom); to worry unnecessarily / crying over spilt milk / often used with negatives, e.g. no need to worry about past issues

to substitute for / to take the place of / to replace / for / on behalf of / to stand in for

surname Gu

ancient / old / paleo-

people of ancient times / the ancients / extinct human species such as Homo erectus or Homo neanderthalensis / (literary) deceased person

person; people / CL:個|个[ge4],位[wei4]

to undertake / to carry / to shoulder / to take responsibility

picul (100 catties, 50 kg) / two buckets full / carrying pole and its load / classifier for loads carried on a shoulder pole

to worry / to be concerned

to worry / to concern oneself with / worried / anxiety / sorrow / (literary) to observe mourning