European Street Painting

I wonder if this is really possible. They are doing great in artwork. I was surprised to all their street paintings.
It is worth having a look.

Swire Island East and the Hong Kong Youth Arts Foundation co-present a second street painting event - titled "The Illusion of Art". A variety of activities with optical illusion as the key creative theme will bring an exceptional art experience for public enjoyment and appreciation.
The european masters of Street Painting, Edgar Müller & Manfred Stader, present their art:

Traditional european Street Painting.