千年以后
[qiān nián yĭ hòu]
It means 'after a thousand years'. This carries a connotation of an extremely long period of time - often associated with patience, endurance, immortality and waiting. It could express the wish for something eternal (like love) or imply a promise kept after eons. Alternatively, it may just suggest something happening so far in the future as to be beyond practical contemplation.