"雲形紋章" by John Meade Falkner is an adventure novel published in 1898. Set in eighteenth-century England, it follows young orphan John Trenchard who stumbles upon a smuggling operation hidden in his village church's crypt. When he discovers a cryptic message pointing to a legendary diamond stolen from King Charles I, John embarks on a dangerous quest involving treasure hunting, betrayal, and shipwreck. His journey spans years of hardship and takes him far from his coastal village of Moonfleet—and the girl he loves.