Walls in an alley in Hanoi. Countless painted numbers, glued leaflets, an accumulation of information... How many people have been there? How much time has elapsed behind the endless repetition of painted inscriptions, erased, glued, peeled off, appeared and disappeared? This is the story of these walls that no one ever talks about. By breathing light and color into it, I wanted to express the traces of this multitude of people who have visited these places. And so it was that in turn, by leaving my own mark, I (myself) became one of them.