🌸 梅花易数起卦（时间起卦 / 数字起卦）Plum Blossom Numerology (Meihua Yishu)
按邵雍梅花易数起卦：用农历年月日时或任意数字得出本卦、互卦、变卦和动爻，判断体用五行生克，并显示《周易》卦辞与爻辞原文。Cast a hexagram with Shao Yong’s Plum Blossom method — from the lunar date and hour or from numbers — to get the primary, nuclear and changed hexagrams, the moving line, the Ti/Yong element relation and the original Book of Changes texts.
使用说明与常见问题How-to & FAQ
「梅花易数起卦（时间起卦 / 数字起卦）」是什么？What is the Plum Blossom Numerology (Meihua Yishu) tool?
按邵雍梅花易数起卦：用农历年月日时或任意数字得出本卦、互卦、变卦和动爻，判断体用五行生克，并显示《周易》卦辞与爻辞原文。Cast a hexagram with Shao Yong’s Plum Blossom method — from the lunar date and hour or from numbers — to get the primary, nuclear and changed hexagrams, the moving line, the Ti/Yong element relation and the original Book of Changes texts.
如何使用「梅花易数起卦（时间起卦 / 数字起卦）」？How do I use the Plum Blossom Numerology (Meihua Yishu)?
「时间起卦」默认用当前时间，可改成任意时刻；「数字起卦」输入两个数（上卦、下卦），第三个数可选作为动爻数，不填则用两数之和。也可以点「随机数字」。“By time” uses the current moment (editable). “By numbers” takes two numbers for the upper and lower trigrams and an optional third for the moving line (otherwise their sum). Or press “Random numbers”.
时间起卦怎么算？How does casting by time work?
农历年地支序数（子 1…亥 12）＋月数＋日数，除以 8 取余得上卦；再加上时辰地支序数，除以 8 得下卦、除以 6 得动爻（余 0 算 8 或 6）。卦数用先天八卦：乾 1、兑 2、离 3、震 4、巽 5、坎 6、艮 7、坤 8。Lunar year branch number (Zi 1 … Hai 12) + month + day, mod 8, gives the upper trigram; adding the hour branch number gives the lower trigram (mod 8) and the moving line (mod 6; a remainder of 0 counts as 8 or 6). Trigram numbers follow the Earlier Heaven order: Qian 1, Dui 2, Li 3, Zhen 4, Xun 5, Kan 6, Gen 7, Kun 8.
卦辞和爻辞的来源？Where do the texts come from?
《周易》经文（卦辞、彖、大象、爻辞、小象）为公有领域古籍，数据整理自开源项目 freizl/yijing（MIT 许可）。The Book of Changes is public domain; the texts are taken from the open-source freizl/yijing dataset (MIT).
梅花易数准吗？Is Plum Blossom numerology accurate?
梅花易数属于中国传统民俗文化，本工具按通行的传统规则和公开典籍计算，只保证「按规则算对」，不代表能预测未来。结果仅供娱乐和文化参考，请不要据此做医疗、投资、法律或其他重要决定。Plum Blossom numerology is part of Chinese folk tradition. The tool applies the customary rules and public classical texts correctly, but that does not mean it predicts anything. Use it for fun and cultural interest only — never for medical, financial, legal or other important decisions.
「梅花易数起卦（时间起卦 / 数字起卦）」免费吗？数据会上传吗？Is the Plum Blossom Numerology (Meihua Yishu) free? Is my data uploaded?
「梅花易数起卦（时间起卦 / 数字起卦）」完全免费，无需注册或安装，手机和电脑都能用；所有处理都在你的浏览器本地完成，输入的内容和文件不会上传到服务器。The Plum Blossom Numerology (Meihua Yishu) is completely free with no sign-up or install and works on phones and desktops; everything runs locally in your browser and nothing you enter is uploaded.