The Su House deep in the ancient city is the last memory left by Lin Zhixia's grandmother Su Jing'an. On the anniversary of her grandmother's death, Lin Zhixia returned to this quiet old house to sort out her belongings, but found a locked rosewood box in the corner of the attic. Hidden in the lotus pattern carved on the wooden box is a groove that matches the pattern of the "An" jade pendant she wears. When she opened the wooden box with her jade pendant, yellowed letters, faded old photos, and handkerchiefs embroidered with half-digital codes appeared one after another, drawing her into the folds of time. The past that was deliberately dusted by grandma, about an unspoken concern, a secret agreement, and a waiting that spanned half a century, are slowly emerging with the guidance of old things. In the process of exploring the secret, Lin Zhixia not only understood the deep love that her grandmother had endured throughout her life, but also discovered that she was already connected by blood to this past. Hidden in the folds of time are not only family secrets, but also love and protection that have never dissipated.
