The lifestyle and cultural norms of the Moso people "one of fifty-six Chinese nationalities" of Tibet, who "number about 30,000" are much different than those of most developed countries. The women tend to engage in a series of monogamous relationships, resulting in matriarch family units with several half-sibling children. This one fact might cause people to describe them as sexually promiscuous and immoral. Others might look at the matriarchal, matrilineal Moso as an intriguing social entity not bound by the social constraints of most cultures. Although the Chinese government has encouraged marriage, the Moso people are overwhelmingly undeterred. Mothers tend to prize daughters, as through their offspring the family lines continue. Children may never learn the identity of their fathers, and if they do, will refer to them (as all men) as "Uncle." Children ideally remain with their maternal relatives their entire lives, dying in the same dwelling in which they were born. Men are needed "to herd the yaks in the mountains, to travel with the horse caravans to trade in the outside world, and to make the long journey to Lhasa to study the holy Buddhist scriptures and become lamas." Girls shift from childhood to womanhood by participating in a post-menarche "skirt" ceremony. They then move from a communal room to their own special chamber and are encouraged to engage in sexual relationships. Leaving Mother Lake is the story of Namu Erche, a member of the Moso tribe, who lived a life less ordinary. Her mother, "curious and restless," defied the norms of the tribe by moving from her own mother's home to settle in a village two days' walk distant. Namu cried so much as a young child that three attempts to trader her to other families were unsuccessful. An elder sister was instead traded for a male cousin, who was raised as her brother. At eight, she was sent to yak-herd with a great-uncle. Several years later she returned to her mother's home to participate in her skirt ceremony. When a group of Han Chinese visited her village to record traditional songs, they noticed her singing skills and chose her along with two others to participate in a singing contest. Successful in their first endeavor, they again succeeded in a bigger contest. Changed by her big city experience, she ran away from home to follow her dreams. She returned home, but only for a visit, after several years at a musical conservatory. Although Namu's story is fascinating, the writing seems overly simplified. Other good memoirs about lives less ordinary include: Angela's Ashes by Frank McCourt, The Twelve Little Cakes by Dominika Dery, and The Glass Castle by Jeannette Walls.