天塌下来我顶着你若累了我背着
[tiān tā xià lái wŏ dĭng zhe nĭ ruò lĕi le wŏ bèi zhe]
Translated as 'If the sky falls down I'll hold it up; if you are tired, I’ll carry you on my back', it symbolizes strength, commitment and support in adversity for someone the user cares about.