1966. Sparks refer to both the matchbox trademark pattern and the matchbox stickers; they are a long-standing and popular collection in the collecting world. Since the 1950s, Dunhuang cultural relic patterns have been an important member of the Chinese Spark family. In 1966, Gansu Tianshui Match Factory produced a set of twelve sparkles to commemorate the "1600th Anniversary of Dunhuang Grottoes". Except for the first spark, the main images of the remaining eleven sparks are all representative patterns of Dunhuang murals.