The famous noodles in Xi'an are Biángbiáng noodles.The origin of the name Biángbiáng noodles is that they make a Biángbiáng sound when they are made, hence the name.The order of strokes in the writing of the character Biáng is as follows: first, the head of the character Cave, then the youngest, the word, the youngest, then the long, the horse, the long, the left side of the moon, the right side of the sword, the bottom of the heart, and finally, the side of go. Write a go side. Writing mnemonic is: "a little fly up to the sky, the Yellow River bends at both ends, eight big open mouth, the word in the middle of the word go, left a twist right a twist, you a long I a long, in the middle of the horse king, the bottom of the heart character, the moon character side, a small hook hanging sugar, take a car back to Xianyang".