Leidza was the only known Imperial Palace bred Shih Tzu to reach the west. Charlotte Kauffmann, the wife of a Danish diplomat, rescued Leidza and brought her back to Scandinavia when she left China. One of Kauffman's puppies, Choo-Choo, was given by Queen Maud of Norway to England's Duchess of York, Elizabeth, who was later the beloved Queen Mother.