老当益壮 (lǎo dāng yì zhuàng) | Meaning: old but vigorous (idiom); hale and hearty despite the years | Chinese Idiom with Pinyin & Origin

lit. an old steed in the stable still aspires to gallop 1000 miles (idiom); fig. aged person with great aspirations老骥伏枥lǎo jì fú lì

to age prematurely未老先衰wèi lǎo xiān shuāi

healthy in old age · a hoary head with a youthful face · white hair and ruddy complexion · hale and hearty鹤发童颜hè fà tóng yán

lit. a good sword always remains sharp (idiom) · fig. (of one's skills etc) to be as good as ever · the old man still has it宝刀不老bǎo dāo bù lǎo

to recover one's youthful vigor · to feel rejuvenated (idiom)返老还童fǎn lǎo huán tóng

treasure knife does not age (idiom); old but still vigorous宝刀未老bǎo dāo wèi lǎo

old but vigorous (idiom); hale and hearty despite the years