一石二鳥（いっせきにちょう）
一石二鳥 (一举两得) · noun · JLPT N2
Examples
自転車通勤は健康にもいいし節約にもなるから、一石二鳥だ。
Commuting by bicycle is good for your health and saves money, so it's killing two birds with one stone.
Practise the thinking. Keep the judgement.
Practise the thinking. Keep the judgement.
一石二鳥 (一举两得) · noun · JLPT N2
自転車通勤は健康にもいいし節約にもなるから、一石二鳥だ。
Commuting by bicycle is good for your health and saves money, so it's killing two birds with one stone.