Meaning of ér yán:
ér yán
而言
Phrase
(typically preceded by 就…[jiu4 xx5] or 對…|对…[dui4 xx5] etc) as far as ... is concerned; speaking in terms of ...
Duìyú wǒ ér yán, lǚxíng shì zuì hǎo de fàngsōng fāngshì.
对于我而言,旅行是最好的放松方式。
As far as I'm concerned, traveling is the best way to relax.