People try to solve Lu Ban Lock puzzle, a traditional Chinese toy, at the 20th world culture festival in Rabat, Morocco, May 8, 2024. The 20th world culture festival of the Rabat School of Mines kicked off here on Wednesday. Chinese paper-cutting, Lu Ban Lock and painting of opera facial mask were welcomed by Moroccan students.(Photo: Xinhua)

A man tries the Chinese paper-cutting at the 20th world culture festival in Rabat, Morocco, May 8, 2024. The 20th world culture festival of the Rabat School of Mines kicked off here on Wednesday. Chinese paper-cutting, Lu Ban Lock and painting of opera facial mask were welcomed by Moroccan students.(Photo: Xinhua)

A woman wearing Hanfu poses for photos at the 20th world culture festival in Rabat, Morocco, May 8, 2024. The 20th world culture festival of the Rabat School of Mines kicked off here on Wednesday. Chinese paper-cutting, Lu Ban Lock and painting of opera facial mask were welcomed by Moroccan students.(Photo: Xinhua)

People wearing Peking Opera facial masks pose for photos at the 20th world culture festival in Rabat, Morocco, May 8, 2024. The 20th world culture festival of the Rabat School of Mines kicked off here on Wednesday. Chinese paper-cutting, Lu Ban Lock and painting of opera facial mask were welcomed by Moroccan students.(Photo: Xinhua)