A legend that attests to the position of Lhoka region in the annals of Tibetan history states that human beings are the creation of a union between a sacred monkey and women. According to archaeological findings and legends and ancient documents, people lived in this area up to four million years ago. A primitive civilization grew up in the Yarlung Valley and a field in the village of Sare near Tsetang Town, is said to be the first farming field in Tibet. The first king in Tibetan history, Nyatri Tsenpo, really a mere chief of the Yarlong tribe, began ruling over the Yarlung valley in the beginning of second century BC. He founded the Fan Kingdom and established a hereditary monarchy. During the reign of the ninth king, Budegong, agriculture flourished and he was able to mobilize the people to excavate canal, channelling water to irrigate the flatland. A formal forming system came into existence during the reign of Yixiulie, the eleventh king, when he devised standard measurement units for allocating farmland and counting livestock. Six palaces were built in the region between the rule of the ninth and fifteenth kings.