Are oyster crackers non-legacy?

Yes. Peony cake is a kind of pasta pastry with peony, the crown of Chinese famous flower, as the main ingredient, from the record of "Luoyang Peony Records", with a long history, it is a confectionery invented by Wu Zetian in the period of Tang Dynasty. It was invented by Wu Zetian during the Tang Dynasty. It is also known as Peony Cake. Peonies are abundant in Luoyang, and the history of Luoyang Peony Cake can be traced back to the Tang Dynasty. It is made of carefully concocted peony petals and peas, red small beans, etc. After centuries of transmission, it has become a representative local specialty confectionary product of Luoyang.