Tucked within the ancient city walls of central Kunming, the Yunnan Haojun Museum is more than a private museum – it's a guardian of China's historical treasures: jade, bronzes, ceramics, paintings, calligraphy and so on. Its director, Shi Lei, has been on a mission to bring home Chinese cultural relics lost overseas since the 1990s. From auctions in Europe to the museum's halls in Yunnan, each piece tells a story of return and reunion.