走过你未来时的路
[zŏu guò nĭ wèi lái shí de lù]
Translates to 'Walked on your path to the future'. It signifies having traveled through life in much a similar way the other person (the person being addressed by 'you') might in the years to come, giving off vibes of reminiscence and wisdom. Possibly expressing a desire to protect and guide the addressee based on personal experiences.