The Han Dynasty (simplified Chinese: 汉朝; traditional Chinese: 漢朝; pinyin: Hàn Cháo; Wade–Giles: Han Ch'ao; IPA: [xân tʂʰɑ̌ʊ̯]) (206 BCE – 220 CE) was an imperial dynasty of China, preceded by the Qin Dynasty (221–207 BCE) and succeeded by the Three Kingdoms (220–280 CE). It was founded by the rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han. It was briefly interrupted by the Xin Dynasty (9–23 CE) of the former regent Wang Mang. This interregnum separates the Han into two periods: the Western Han (206 BCE – 9 CE) and Eastern Han (25–220 CE). Spanning over four centuries, the period of the Han Dynasty is considered a golden age in Chinese history. To this day, China's majority ethnic group refers to itself as the "Han people" and Chinese characters are referred to as "Han characters".
Sun Wu (simplified Chinese: 孙武; traditional Chinese: 孫武; pinyin: Sūn Wǔ), style name Changqing (長卿), better known as Sun Tzu or Sunzi (simplified Chinese: 孙子; traditional Chinese: 孫子; pinyin: Sūnzǐ; pronounced [swə́n tsɨ̀]), was an ancient Chinese military general, strategist and philosopher who is traditionally believed to be the author of The Art of War, an influential ancient Chinese book on military strategy. Sun Tzu has had a significant impact on Chinese and Asian history and culture, both as an author of The Art of War and through legend.
Sun Tzu, also known as Sun Tze or Sun Wu in other translations, was a historical figure whose authenticity is questioned by historians. Traditional accounts place him in the Spring and Autumn Period of China (722–481 BC) as a military general serving under King Helü of Wu, who lived c. 544–496 BC. Modern scholars accepting his historicity place the completion of The Art of War in the Warring States Period (476–221 BC), based on the descriptions of warfare in the text, and on the similarity of text's prose to other works completed in the early Warring States period.