Teacher recreates famous Chinese painting with sulfuric acid
13:28, November 17, 2010 
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An "etched edition" of the famous painting "Along the River during the Qingming Festival"(photo: Guangzhou Daily)
Huang Bingjun is an 80-year-old retired chemistry teacher from Zengcheng High School. He created an "etched edition" of the famous painting "Along the River during the Qingming Festival" with his solid foundation of chemistry knowledge and painting.
The various figures, bridges, streams, streets and shops on the impressive painting are vividly sketched with sulfuric acid.
"I have studied painting with sulfuric acid for more than 20 years since I began to do it as early as 1984," Huang said when talking about his original "acid pickling painting."
He also said that because he was a chemistry teacher, he has extensive knowledge about the strong oxidizing, hydroscopic and dehydration properties of sulfuric acid, and he also has a relative solid foundation in painting. Therefore, he has been wondering how he can connect these two familiar things together.
"I used a brush to dip some diluted sulfuric acid and painted on the board, and then I repeatedly heated the board with an infrared ray lamp. Therefore, the water molecules were absorbed by the board and the shades of colors will become different," Huang said.
He added that the higher the heat, the deeper the color is. As a result, it has the same effect as a Chinese brush drawing.
"The painting will be completed after I use water to flush out the remaining sulfuric acid. In addition, the painting will be permanently on the board and will never fade," Huang said.
Guangzhou Daily contributed to this report.
By People's Daily Online
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（Editor：叶欣）
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http://english.people.com.cn/90001/90782/7202268.pdf