The photo of 78-year-old boat rower Bui Thi Xong taken in Hoi An is one of the first that Rehahn captured for his Hidden Smile photography project. The picture, which is one of his most well-known photos, has been given to the museum on the occasion of the International Women’s Day, March 8. This event is at the same time intended to honour the hidden beauty and grace of Vietnamese women, with Rehahn's photo representing their timeless charm, depicted in the most unpretentious way. A ceremony was held at the museum with the participation of Rehahn, Xong, and representatives from the museum and French embassy.