One of the graffiti artists featured at an ongoing MoCA Shanghai exhibition is John Matos (Crash) [Photo provided to China Daily]

JonOne painted at the opening, working on a seven-meter canvas with a DJ performing.

According to Gong Mingguang, the director of MoCA Shanghai, some of the other artists featured will also visit the museum during the exhibition.

Speaking about how the museum prepared for the exhibition, Gong says: "We decided to leave some walls blank, and place scaffolds in the exhibition hall to recreate the original work sites of the artists on the street. So, the artists can visit the exhibition to create new works on site."

Speaking about his work, JonOne, who first visited Shanghai in 2009 for his first exhibition in China, says: "I am very much inspired by Chinese calligraphy. And at that time I noticed how calligraphy was very important for the Chinese culture."

He recalls seeing people writing on the floor using a brush and water at the People's Park, and "I decided to do likewise."