耳旁风

lit. wind past your ear / fig. sth you don't pay much attention to / in one ear and out the other

wind / news / style / custom / manner / CL:陣|阵[zhen4],絲|丝[si1]

one side / other / different / lateral component of a Chinese character (such as 刂[dao1], 亻[ren2] etc)

ear / handle (archaeology) / and that is all (Classical Chinese)

lit. to treat (what sb says) as wind past your ear / fig. to completely disregard