Filial piety; acts of kindness, care, or respect shown toward one's parents.
親孝行をするなら、元気なうちにしておいたほうがいい。
If you want to be filial, it's better to do it while they're still healthy.
週末に両親を旅行に連れて行くのは親孝行だ。
Taking your parents on a trip over the weekend is an act of filial piety.
彼は親孝行な息子で、よく父の世話をしている。
He is a filial son and often takes care of his father.