For about 2 years now, the small room of about 20 square ^meters in Binh Thanh District, Ho Chi Minh City of Nguyen Dinh Thang (29 years old) has started to become more cramped. Because, in addition to composing music and teaching guitar, Thang also has a new passion: "typing" paintings.

"I accidentally saw a video on social media, a painter in Switzerland using a hammer to knock on glass, the cracks forming a painting. At that moment, my head started to "jump numbers" and I became interested in this type of painting" - Mr. Thang said.

Holding two hammers in his hands, the artist introduced that these were special paint brushes. At first, he bought many hammers to try. From the original hammer, Mr. Thang further polished it to get the most suitable and satisfactory hammering head.

While typing, he constantly compared it with the original painting to avoid mistakes. According to Mr. Thang, this type of painting is not yet popular in Vietnam, so at first he encountered many difficulties in creating a satisfactory work.

"Double-layered glass is most suitable for this type of painting. Depending on the requirements of the painting, I choose glass with the appropriate thickness. The smaller the painting, the more difficult it is to knock, especially details such as eyes, eyelids, etc. If the tapping force is not controlled well, long cracks will damage the painting" - Mr. Thang explained.

Mr. Thang said that good tapping techniques will make the painting much more valuable. Although the hammer is used directly on the glass layer above, most of the cracks are created on the glass layer below. Therefore, the surface of the painting is almost smooth.

It takes young artists 2-7 days to complete a work, the price ranges from a few million to a few tens of millions of dong (depending on the artistic level of the painting), many glass paintings have been "exported".

Previously, Mr. Thang had tried his hand at many different types of painting such as color painting with a brush, paint splash painting, etc. The artist said that each painting method has its own interesting points.

With stained glass, the minimalism of black and white requires the artist to be meticulous and careful. Depending on the light, the painting will have different depths.

"Knocking on paintings is a bit noisy, so I usually do it in the morning or early afternoon. The rest of the time I teach piano and compose music. Although I work continuously, I don't feel tired or pressured. It's simply a passion and a hobby," Thang said with a smile.

Currently, Mr. Thang is researching and learning about the types of paint that can adhere to glass. With his creativity and passion for unconventional art, the young man plans to combine glass painting and paint painting together.