Tuesday was a doubly lucky day for Li Yafei, a young woman from Shandong province.

Not only did she visit the National Museum of China in Beijing for the first time and purchase the popular coronet magnet — a souvenir available in the museum's gift shop that is often sold out — but she was also the millionth to buy one since it first went on sale in mid-July last year.

To her surprise and excitement, Li was presented with a "1 million record magnet" certificate by the museum's creativity product team in front of media, visitors, and long lines of people queuing to buy one of their own.