八字是中国传统命理学的核心方法，根据出生年、月、日、时的天干地支组合（共八个字）来分析一个人的先天命格、五行平衡和人生运势。Ba Zi is a core Chinese destiny analysis method using the Heavenly Stems and Earthly Branches of your birth year, month, day, and hour (eight characters total) to analyze innate disposition, elemental balance, and life fortune.

输入您的出生日期并选择出生时辰（两小时为一个时辰），点击"计算八字"即可得到四柱命盘、五行统计和日主分析。若不知道具体出生时间，可选择午时作为默认值。Enter your birth date, select your birth hour (each Chinese hour spans two hours), and click Calculate to get your Four Pillars chart, Five Elements count, and Day Master analysis.

日主是日柱天干，代表命主本人，是八字分析的核心。通过日主与其他七个字的生克关系，可以判断命格强弱、喜用神和忌神。The Day Master is the Heavenly Stem of the Day Pillar, representing the person. It is the core of Ba Zi analysis—by examining how the Day Master interacts with the other seven characters, one determines the strength of destiny and favorable elements.