The regrets of Shen Zhiyan and Gu Jingxing being separated due to the war, as well as the waiting and response that spanned seventy years. In the process of sorting out the relics, Lin Shen gradually pieced together the past of the two of them, while Gu Jingxing's soul was stranded in the old house due to obsession. Finally, with the help of Lin Shen, through those unsent letters and the miraculous blooming of the magnolia tree, he was able to complete a belated farewell to Shen Zhiyan's "traces", and this deep love that had been buried by time was brought to light again.
