2 sentences for 空想 (kōng​xiǎng)

1. 与其在这儿空想，不如实际去做。

   yǔ​qí zài zhè​r kōng​xiǎng, bù rú shí​jì qù zuò.

   Instead of just daydreaming, it is better to take action.

   Source: Dong Chinese Dictionary

2. 要把理想变为现实，不能靠空想。

   yào bǎ lǐ​xiǎng biàn​wéi xiàn​shí, bù néng kào kōng​xiǎng.

   To turn ideals into reality, one cannot rely on idle dreams.

   Source: Dong Chinese Dictionary