Fùmǔ de quàngào duì tā láishuō dōu shì ěrpángfēng.
His parents' advice was all wind passing by his ear - completely ignored.
Tips
memory
Picture wind 风 blowing past your ear 耳, not going in - the perfect image for advice that is simply not registered. Used with 当 (to treat as) or 当做 almost exclusively.
