A grandmother carefully threading the loose end of a yarn through the eye of a needle, showcasing the concept of "線頭" as the end of a thread. The scene is set in a cozy crafting space, with the focus on the intricate process of threading the needle. The style is vibrant and detailed, emphasizing the grandmother's hands and the fine thread as the main elements. The background includes crafting tools and materials to add to the crafting atmosphere, catering to a young audience learning about thread and needlework.
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