According to historical records such as Dazu County Records and Dazu County Geographical Names Records, "Pu" and "Yi" were the handover or transit points for delivering documents and postal services in the Qing Dynasty. While delivering postal documents, these stations and shops also became important gathering places for businessmen from Chengdu and Chongqing to stop, drink tea and board.

During the Xianfeng period of the Qing Dynasty, pedestrians from south to north stopped at postal kiosks to drink tea, play cards, eat and stay, which was a prosperous scene. As a result, some smart local fishermen have opened a roadside crucian carp shop by relying on the postal kiosk to cook crucian carp soup and cook crucian carp for pedestrians to eat. Unexpectedly, the crucian carp cooked here is delicious and tender, which has won great appreciation from previous bureaucrats and merchants. Over time, the reputation spread far and wide, and the business is booming.

Under the guidance of intellectuals, many restaurants in the postal kiosk put up signs of "Carassius auratus in the postal kiosk". After the 1981s, the "Carassius auratus" gradually formed a special dish famous in Bashu and Southwest China.

Carassius auratus with a long history has now become a characteristic business card of Dazu.

In this place with a long history and rich cultural atmosphere, food is of course essential. When it comes to food, it is certainly the crucian carp in the post booth. In fact, the history of the post-kiosk crucian carp is not very long. He was originally invented in 1992 by a 61-year-old man. He is actually a native of Zhuxi Town, Dazu County. Twenty years later, the old man has already passed away, but the post-kiosk crucian carp he left us is widely circulated. The old man's first place of work is "Xianglao crucian carp" (Gaojiadian outside the post-kiosk town), but as time goes by, Later, the old man was invited by Liu Sanjie ("Liu Sanjie's crucian carp boss"), that is, the post booth crucian carp gradually emerged in Liu Sanjie's place, and many people came to learn art later. I hope that friends who love food will come to the postal kiosk more often!