Italy's pizza is a variation of the pie that Marco Polo failed to learn in China. The mistake was to translate the word "pie" as "pizzas", and there is a record of this in the history of Italy. Xinjiang's "naan" is from Shaanxi and Henan passed over, due to the vastness of Xinjiang, their crops require a lot of labor, it is natural that the Shaanxi and Henan people to work in Xinjiang to earn a certain amount of labor, and naturally, the process of making the cake was passed to Xinjiang.