回头是狗

'Looking back is a dog'. In Chinese culture, dogs sometimes symbolically represent negative elements. However, in the internet language community, 'back off or looking back is a dog', has another meaning: don't look back at past things and just push forward, suggesting one needs to focus on going forward rather than regretting what has happened before. This phrase could either carry the tone of moving positively towards a bright future or cynicism about how futile efforts in revisiting the past prove to be.