Looking Back, We're Separated by Mountains and Seas

Looking Back, We're Separated by Mountains and Seas Plot:

Lin Xiaoman, a cultural relic restorer at the Palace Museum, has kept a ginkgo leaf hidden for ten years—it’s the "Wait for me" token left by her boyfriend Chen Mo, who suddenly vanished before the college entrance exam. While restoring repatriated overseas relics, she finds the same ginkgo leaf in a Song Dynasty lacquer box, along with Chen Mo’s diary—revealing he was forced to work abroad by his debt-ridden father, disappearing to avoid dragging her down. Now Chen Mo is the head of an international auction house, secretly repatriating lost relics, but between them lie ten years of misunderstanding and Xiaoman’s upcoming marriage to her senior colleague, who’s loved her for years. Can the ginkgo leaf, with the unspoken "I never forgot", bridge the mountains and seas between them?