The tea leak, Lu Yu’s "Tea Classics" has a record: "The water sac: if used frequently. It is cast with raw copper, so that the water does not have the meaning of moss dirty or fishy; with cooked copper, moss dirty ; Iron, fishy and astringent, forest dwelling in the valley, or bamboo and wood. Wood and bamboo are not long-lasting tools, so the raw copper is used. Cui Tian is decorated with it, and it is also used as an oil green sac for storage. The diameter is five inches, and the handle is one inch and five cents. The tea drain is one of the six gentlemen of the tea ceremony. When making tea, it is placed at the mouth of the pot to guide the tea into the pot to prevent the tea from falling Outside the pot. When choosing a tea drainer, there is great emphasis on the material and design of the tea drainer. At present, the most common tea drainer on the market is a ceramic tea drainer. The strainer of a ceramic tea drainer is generally made of gauze. The advantage is that the screen is relatively thin and the filtration is convenient, but the disadvantages are also obvious. After a long time of use, the tea dirt is easy to adhere to the filter screen, which is not easy to clean, and the gauze is easy to fall off. The pure silver tea drainer is handy when used. When placed on the tea table, it is pleasing to the eye and durable. The leaf shape is like a maple leaf floating on the water. It is indifferent and elegant. There are dozens of techniques such as silver, forging, wire drawing, inlay, welding, ligation, twisting, stitching, trimming, etc. The quality of the craft is the highest expression of the craftsman’s patience.