◎ 萬丈高樓從地起 wànzhàng gāolóu cóngdì qǐ

[the loftiest towers are built up from the ground;all things should be done gradually;great oaks from little acorns grow] 比喻凡事要從打基礎做起

萬丈高樓從地起,你這些基礎課沒有學好,以後就難以提高