Yongjin - Onye nrụpụta China nke ọkachamara na-emepụta igwe akpaka akpaka nke na-enweghị ụgbọ ala na-agagharị agagharị nke dị warara maka ọrịre YJ-NF 6/66
Igwe eji akwa ákwà akpaka nke ndị ọkachamara anyị na China, nke a na-akpọ "shuttleless agịga loom" maka ire ere, agafeela ọtụtụ ule ma nweta asambodo mbubata na mbupụ nke enyere ikike. O nwere nhazi na ọdịdị nke e mere nke ọma, na-adọta ọtụtụ mmasị ma na-edugakwa n'ọganihu n'ahịa ahụ. Ọzọkwa, Yongjin nwere ụfọdụ atụmatụ dị mma nke nwere ike inyere ndị ahịa aka imeri uru a na-atụghị anya ya ma chekwaa nnukwu ego.