qiǎo / fù / nán / wéi / wú / mǐ / zhī / chuī / nǐ / děi / xiān / zhǔn / bèi / hǎo / cái / liào

巧妇难为无米之炊，你得先准备好材料。

Even a clever housewife cannot cook without rice, so you need to prepare the ingredients first.