repeated reading makes the meaning clear; read a difficult book a hundred times
Proverb encouraging perseverance in reading; meaning will naturally emerge through repeated effort.
They say repeated reading makes the meaning clear, so let's read this difficult book many times without giving up.
From the Chinese saying 読書百遍而義自見, attributed to 董遇 in a commentary to the 『三国志』: repeated reading makes the meaning reveal itself.