Mongolians carefully maintain knowledge of their genealogies, which can stretch back to ancient times. Accounts of the descent of their relatives and children help to define families as a unique social unit and as a site for a process of biological and social inheritance. It is a sacred duty to trace one’s genealogical descent well. The paternal relative is agnatic, the maternal relative is cognate. Our ancestors knew their genealogy back seven generations, starting from themselves and their father and extending back to their grandfather, (elents) great-grandfather, (khulants) great-great-grandfather, (öndör) great-great-great-grandfather and (zürkhen) great-great-great-great-grandfather. They trace children starting from themselves to their son, (jich) grandson, (guch) great-grandson, (döch) great-great-grandson and (tach) great-great-great-grandson.

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PNG plants naturally and wildly grow in the country's tropical environment (on both coastal and higher altitudes) while others are nurtured. Distinct plants are used by different traditional societies. Fibers are extracted from barks of these plants.

Extracted fibers are sun-dried for half or whole day depending on the type of fiber. Fiber is either hung or laid on a flat surface--both methods are accepted.

Color stored fiber is well dried and stored as fiber storage for bilum making. They easily accessed when needed for the type of bilum the weaver intends to make. Current generation of weaver used the main colors for traditional bilum weaving.

These are main features of the popular sacred Sepik bilum designs and patterns. With names in Buki Arapesh dialect, these pieces depict the most sacred traditions, cultural values, rituals for harvest and festivals, leadership status, and prestige in a traditional social system.

The North Wosera bilums are found among the South Abelam people scattered on the low hills of Sepik plains of Maprik, East Sepik Province. The colors and pattern in layers and variations are distinct features in the common Sepik bilum.

PNG plants naturally and wildly grow in the country's tropical environment (on both coastal and higher altitudes) while others are nurtured. Distinct plants are used by different traditional societies. Fibers are extracted from barks of these plants.

Dye-producing plant species found in local environment vary in different traditional societies. Some of these plants like the turmeric as shown are grown in gardens and homes for easy access and usage.

The dried stored fiber is specifically selected by the weaver for specific bilum type. Different fiber texture is selected without blending to give the essence of the completed traditional bilum piece. Fiber blending is avoided.

Structure of Bilum.\nThe weavers carefully designed and built patterns for bilums representing their identity and culture in various traditional societies.\n\nSacred Bilum.\nOnly elder women weave sacred bilum using fine twisted ropes. The structure of this bilum varies according to climate condition and environment setting. Variations of the bilum are determined by the features of the identities of indigenous tribes, ethnic traditions, and cultural values.