Editions offer two stories of exhausting labor here. Two name Nuwa mending the sky; one names Huang Daopo at her loom, with Nuwa as the alternate. In the myth recorded in the Han text Huainanzi, the pillars holding up heaven broke and the earth split. Nuwa melted stones of five colors to patch the sky, cut the legs from a giant turtle to prop up the four corners, killed the black dragon that menaced the people, and piled up reed ash to stop the flood. Huang Daopo was a Yuan dynasty woman credited with bringing cotton spinning and weaving methods from Hainan to her home near Shanghai. Both stories end in success, but only after enormous effort, which matches the image of searching the sea for a needle. The lot is middle: the thing can be found, at a heavy price in time and care.