返老还童

to recover one's youthful vigor / to feel rejuvenated (idiom)

surname Huan

still / still in progress / still more / yet / even more / in addition / fairly / passably (good) / as early as / even / also / else

to pay back / to return

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity / old (of people) / venerable (person) / experienced / of long standing / always / all the time / of the past / very / outdated / (of meat etc) tough

surname Tong

child

to return (to)