Answer: Choosing to ask questions through needles is the earliest way to ask questions through needles. "Seeking cleverness through needles" is the earliest way to seek cleverness, which began in the Han Dynasty and spread to later generations. It is in the moonlight that women wear needles, and they tie colored threads and wear seven-hole needles. Whoever dresses faster will beg for more skills, which also means who will become a skilled woman in the future.

"Needle throwing and skill testing" was a very popular custom in China during the Ming and Qing Dynasties. The specific method is to take half well water and half rainwater, put them in a bowl, spend the night in the open air, and then expose them to the sun for half a day. At noon, put the embroidery needle on the water, floating but not sinking, and then observe the shadow of the needle in the water.

"Happy spiders should be smart" refers to putting the caught happy spiders (a small red spider) in jewelry boxes or other utensils on the night of the seventh day of July. The next morning, I opened the box and observed the spider web. If the net is appropriate and dense in Fiona Fang, it shows that beggars are clever.

The so-called "buckwheat vegetables" means that some beggars get together during the day on the seventh day of July, pick "buckwheat vegetables (that is, bean sprouts)" and gently put them in a basin, so that "buckwheat vegetables" float on the water. They sang old songs and threw "clever colors".