2. Hook: At first, small stone strips, bamboo strips, wooden strips and animal bones with sharp ends were used as hooks and wrapped in bait, waiting for the fish to catch its throat when swallowed; In the Neolithic age, people would grind bone hooks; After Shang Dynasty and Western Zhou Dynasty, there were iron hooks. Xu Shen in the Eastern Han Dynasty interpreted "fishing" as "hooking fish". The hook is also qu Jin, and fishing with qu Jin is called fishing. "In addition to fishing line, hemp thread and silk thread, in ancient times, the silk pulp in cocoon-forming silkworms was collected, artificially drawn into a single thick silk, and naturally dried before use. This kind of silk thread is soft, smooth, transparent and strong. As for fishing rods, ancient people often used slender bamboo to make them. The basis is found in The Book of Songs and "Guo Fengwei Wind Bamboo Rod": "Swish the bamboo rod to catch it. "At the same time, the ancients were quite experienced in the choice of fishing season, weather and the use of fishing techniques. We regard spring and autumn as the "golden season" for fishing, which has long been described in ancient books. For example, the poem "Peach Blossom Flowing Water and Mandarin Fish Fat" in Zhang's "Fishing Song" refers to fishing in spring; Meng Haoran's "Prime Minister Zhang is in Dongting Lake": "I am sitting here, watching a fisherman casting, and the water in August Lake here has a feeling of squid." . "The sidewalk is empty, and autumn is a good time for fishing. In addition, the ancients also studied the importance of matching lines with water colors. Fang Gan, a poet in the Tang Dynasty, mentioned in his poem "To the Old Man on the River": "There are many golden scales at the bottom of the pool, and the prophet does not set incense bait. If you want to teach fish no difference, you must learn to rub blue and dye fishing lines. "