Such a person is like a rainbow, only when you really meet someone will you know there is such a beautiful person. The sentence is in flipped. The original sentence is: "But every once in a while you find someone who's iridescent, and when you do, nothing will ever compare," The common Chinese version is translated by writer Han Han. Nếu cầu vồng, đáp ứng biết tồn tại, đã dạy tae-ahn dong ping lỗi thời