Comfortable and valuable
It is an idiom with the pronunciation of Qi è x ī NGU ì D ā ng and the meaning of reasonable. It comes from Wen Fu written by Lu Ji of Jin Dynasty.
explain
be perfectly logical and reasonable
source
Lu Ji's Wen Fu in Jin Dynasty: "those who boast about their eyes are extravagant, while those who are comfortable are expensive."
example
Of course, this explanation may not be true. Some problems in Chinese history by Fan Wenlan
grammar
Combined; predicate; commendatory
Comfortable and valuable
heart startling and gallbladder trembling -- be deeply - xīn jīng dǎn zhàn
go forward with great strength and vigour - hào hào dàng dàng
Talk about the past and the present - shuō jīn dào gǔ
not give serious thought to anything - wú suǒ yòng xīn