向前走别回头没有什么好难
[xiàng qián zŏu bié huí tóu méi yŏu shén me hăo nán]
'Just keep walking forward without looking back, there's nothing too hard.' It represents the spirit of bravery, perseverance and never giving up when encountering any difficulty, setbacks or troubles. It means no matter how hard the journey, one should always move forward firmly, and everything will pass as long as they persist.