胡思乱想

nǐ bù yào hú sī luàn xiǎng bù huì chū shì de

你不要胡思乱想，不会出事的。

Don't let your imagination run away with itself. Nothing's going to happen.

méi yǒu gēn jù de hú sī luàn xiǎng

没有根据地胡思乱想

disregard reality and indulge in flights of fancy

nǐ bù yào zhěng tiān hú sī luàn xiǎng yīng gāi tā tā shí shí de zuò diǎn r shì qing

你不要整天胡思乱想，应该踏踏实实地做点儿事情。

You should be down-to-earth and get some work done instead of indulging in wild imaginations all day long.