relive (/renew/revive) an old dream; relive an old experience; renew the old romance
❍ 谈这个有什么用呢？你不过是在～罢了。What’s the use of talking about this? You’re merely reviving an old dream.
重温旧梦chónɡ wēn jiù mènɡ
比喻回忆过去所经历的情景，希望重新再来。revive an old dream,relive an old experience, renew the old romance