May 18 is International Museum Day, and this year's theme is "Museums Uniting a Divided World." It reminds us that across time and place, we share universal bonds: love for family, and the pain of loss. In this segment of China Finds, we're zooming in on a recent exhibition at the National Museum of China, telling a story so personal and powerful, it resonates with people everywhere. On the show: Niu Honglin, Yushan & Yushun