Drum nail washing is a style of pen washing. It is in the shape of antique copper and is decorated with raised drum nails when washing. In the Song Dynasty, Jun Kilns and Longquan Kilns were fired.

Jun porcelain was one of the five famous porcelain in the Song Dynasty. This is due to the versatile Huizong of the Song Dynasty. Historically, he was judged to be unfit to be an emperor but suitable to be an artist. Jun porcelain was also developed under his advocacy and became a royal porcelain.

The Nanjing Museum collects a Song Dynasty "Kiln Transformation Sky Green Glaze Drum Nail Washing"(picture below).

Because the drum nail washing has a history of thousands of years, the mouth edge is still a bit defective, and the museum is dimly lit, the photos cannot restore the artistic conception of "the sky after the rain, the sky is green and the clouds are broken".

In 2010, the Nanjing Arts and Crafts Building held a Jun kiln porcelain exhibition, including a work similar to the "Drum Nail Washing" collected by the Nanjing Museum. This work was created by Wen Guozheng, a master of arts and crafts from Henan Province and a master of ceramic art from Henan Province, in 2009. It remained in the counter of the Arts and Crafts Building after the exhibition ended.

On May 11, 2018, after visiting the Nanjing Museum with his wife, we arrived at the Arts and Crafts Building. At first glance, we were attracted by the "drum nail washing" of this Jun porcelain. In my memory, it was the same as the "drum nail washing" collected by the Nanjing Museum. Look carefully: colorful colors, exquisite workmanship, solid porcelain texture, and the background is Rowen national politics. The salesperson saw that we were interested in this artifact, so he came over and enthusiastically introduced it to us.

In order to hold this Jun porcelain exhibition, the Arts and Crafts Building specially invited Master Wen Guozheng to copy the Nanjing Museum's "Drum Nail Washing" to participate in the exhibition. I don't know why no one asked for eight years until they met us that they came to our home from the Arts and Crafts Building. It seems that this is fate.