The nozzle cooked in the old iron pot is soft and sweet, and making tea is even more powerful. Yunnan is located in a high altitude area, and boiling water in a raw iron pot can obviously improve the water temperature (the water temperature in Kunming can be close to 100℃), so it is most suitable for making Pu 'er tea. In the process of making tea, iron pot absorbs chloride ions in water and releases ferrous iron. Long-term drinking can prevent anemia and supplement iron. This is one of the reasons why Japanese men and women live longer. Because pig iron is used as raw material, through casting and the author's artistic attainments, the special culture of the old iron pot has been formed. You can use it as a healthy daily boiler or as an art appreciation or antique collection. The value of iron pots varies greatly due to the fame and skill of the producers. At present, the storage capacity of old iron pots in Japan has become less and less, which has caused their prices to soar.

A close look at Yasunosuke and Iron Pot reveals the author's profound humanistic background and simple life philosophy. Even if there is no inscription on the pot, senior collectors can judge whether it is Yasunosuke's work. No matter the material, workmanship or design, Yasunosuke's works are very different from ordinary casting pots. Yasunosuke's works are simple and exquisite in style, unpretentious, simple and elegant, and pay attention to the modeling and coordination of the pot body, which is natural. In Yasunosuke's early works, the pot body didn't leave a name, only the noble pot reflected the world. With the popularity of iron pot in Yasunosuke, Long Wentang began to sign the bottom and lid of the pot, and adopted an artistic font called "Hua Yin", which is extremely difficult to copy. With the development of Longwentang itself, the works produced by Longwentang are also rich and varied. The pots of the highest-level works of Long Wentang are distinguished, and the font size of Long Wentang is embedded. In the seventh generation of Yasunosuke, Long Wentang signed flowers on the pot body and lid, added the name of the hall, and added an outer box stamped with cinnabar. The similarities between Yasunosuke's works of Long Wentang and iron pot's works in the later period are reflected in the perfect craft of pot flow. Generally speaking, the spout and the pot body almost come from the same source, and there is no trace of polishing tools. This is the beauty of casting in iron pot, Yasunosuke. Yasunosuke's handling of the clasp is ingenious, exquisite and elegant, and he will never take it lightly. The identification of Yasunosuke's and iron pot's works can be mainly distinguished by picking buttons and flowing pots. Iron pot, a famous high-grade product, usually adopts a pure manual dewaxing method similar to ancient bronze casting in China, which is exactly like a pot and is a treasure in iron pot.

Yasunosuke's highest-level works represented the highest Japanese casting technology at that time and the cultural connotation of Longwentang. Different from the iron pots mass-produced by factories on the market, Yasunosuke, an iron pot, is indifferent to craftsmanship and puts his feelings into a century-old pot without arrogance or rashness.