别做回头狗

Translating literally as 'Don't be a Turn-back Dog', this is a colloquial, playful way of telling someone not to look back or reconsider their decision after moving forward with it. The implication here is advising against changing one's mind quickly or hesitantly, especially in a context where commitment to action is needed. In Chinese internet slang, 'dog' sometimes humorously refers to someone who does something unbecoming or weak-willed.