The meaning is self-evident.
Read it a hundred times, and its meaning will become apparent. It comes from "Three Kingdoms? Biography of Dong Yu" and is a famous aphorism. The original source of the text is "Three Kingdoms: Biography of Dong Yu". There are people who are scholars, but Yu refuses to teach, and says: "You must read it a hundred times first"! He said: "Read it a hundred times and you will see its meaning."