The country was created by Thục Phán, who served as its only monarch, ruling under the title An Dương Vương and creating the Thục Dynasty by uniting the mountainous Âu Việt region (comprising what is today northernmost Vietnam and parts of southern China) with the more southerly Lạc Việt (located in the Red River Delta of what is today northern Vietnam). The kingdom was later conquered by a Qin Dynasty army led by Zhao Tuo (Vietnamese: Triệu Đà), and incorporated into what would eventually become the kingdom of Nanyue (Vietnamese: Nam Việt).