你背对我着远走我面对着你心痛
[nĭ bèi duì wŏ zhe yuăn zŏu wŏ miàn duì zhe nĭ xīn tòng]
This conveys heartache and sorrow from the moment of separation when the loved one is moving away, with a focus on the deep pain felt from this action of turning one's back and parting ways.