one hundred years ago; a hundred year previously
the hundredth year; out of luck; (at the) end of one's rope; rare chance; unusually good fortune
Hundred Years War (1337-1453)
One Hundred Years of Solitude (1967 novel by Gabriel García Márquez)
permanent national policy
100th birthday anniversary
waiting for one hundred years for the waters of the Yellow River to clear; waiting in vain for an unlikely event; waiting for pigs to fly; when the sky falls, we shall catch larks
a bad wife spells the ruin of her husband; a bad wife means a hundred years of bad luck to her husband
century of humiliation (in Chinese history)