不拘小节

【名称】：不拘小节. 【拼音】：bù jū xiǎo jié. 【释义】：拘：拘泥。不为小事所约束。多指不注意生活小事
traditional: 不拘小節
· to not bother about trifles (idiom)

Trifles or small, little things in our daily life seems not important, and can be ignored or taken for granted. But, the over-looked small matters might led to disaster at the later stage.
So, be alert and keep everything in order.