Once there was an old tower-city wanderer in Eastern Continent, burdened with phoenix-ash and buried in blood-filled ravines. Looking back across ten thousand miles over sixteen years, one transfer order at last turns the wheel again. A thousand feathers startle the spring of Chang'an, and hidden tracks invite entry into secret gates. New songs settle old grudges; blue lotus-like brows paint the heart. May it guard all nine provinces of Great Tang and let my feelings roam free. The glorious Tang age is approaching and the whole realm is at peace. She vows to travel the earth and witness a flourishing panorama that will be praised for ages, and she resolves to clear injustice and restore the truth behind a bloody case sealed away for many years. Reader guide: 1. This is an alternate-historical Tang setting. From Emperor Gaozu Li Yuan through the Kaiyuan era of Emperor Xuanzong, the broad historical direction is the same as real Chinese history up to that point, though after Kaiyuan it gradually diverges. Customs, characters, institutions, and other details have been modified, and some later-dynasty elements are blended in. 2. This is a mystery and suspense novel, a brainchild combining Ming-Qing court-case fiction with Japanese orthodox detective fiction. Some fantasy elements appear, but only lightly. The story basically follows the Ten Commandments and the Twenty Rules of detective fiction, so those touches do not damage the logic or real-world plausibility of the cases. The culprit will absolutely never be anything other than a human being, so readers may rest easy. 3. The novel is one-on-one, with one main pair and one secondary pair. 4. The protagonist insists on adding one more line: do not compare me with Judge Di; I am not his equal. The book entered VIP on March 21, 2017, with three consecutive chapter updates. It is published exclusively on Jinjiang Literature City, and anyone who has reposted it is asked to delete and withdraw it at once. The author says bookmarks are important, invites readers to click and bookmark, and points them toward the Beiyuan Mountain House microblog, where following will provide update news and occasional short extras.