I heard a story about Zhuge Liang. In those days, it was a drought, and there was no rain for a long time. The ancient wells in Bowang City dried up, and the water source was cut off. There was not much water left for cooking. Seeing that the soldiers were hungry and thirsty, and their morale was floating, Guan Yu was so anxious that he quickly wrote a letter and sent it to Xinye overnight, asking Zhuge Liang to order his withdrawal. After thinking for a long time, Zhuge Liang wrote back a letter, telling him in the letter: "Use dry noodles, soak less water, mix with lumps, make a pot of kang, food is the first priority, pay soldiers, and stabilize the army." Guan Yu sent someone to make the chief cake according to what the strategist said. This cake is as big as a shield and as thick as a wine bottle. It tastes crisp and refreshing, and it is simple and convenient to make. The soldiers finally relied on it to overcome the difficulties and stick to Bowangcheng. In addition, Zhuge Liang also created Wolong rice crust, which was not as powerful as turning the tide, but it was indeed a delicious food.