An Duong Vuong King and set up its capital in Phong Khe province and built Loa Thành citadel. By the Golden Turtle Genie's grace, An Duong Vuong had a magic bow which was able to kill thousands of invaders just by one arrow.  Trieu Da, the ruler of Nam Hai land, was cunning to make peace with An Duong Vuong and to send his son to propose An Duong Vuong's daughter - My Chau.She was so completely trust in her love that she was finally trapped by her husband and lost the country.