毕竟是曾经毕竟已离开
[bì jìng shì céng jīng bì jìng yĭ lí kāi]
This internet name implies a nostalgic and bittersweet sentiment. It reflects the user’s feelings of looking back on past experiences and accepting that they have moved on. The phrase '曾经毕竟已离开' means ‘after all, it was in the past; now I have left,’ which suggests letting go of the past.