Ruan Qinghe's "Qinghe Medicinal Food" opened on the busiest street corner in Qingzhou, Jiangnan. Business was so good that the owner of the drug store next door was so jealous that he smashed her sign in the middle of the night. She squatted on the ground to pick up pieces of wood, and a baggage next to her was kicked in front of her - someone had consigned a box of medicinal materials from the north, and the consignee wrote "Murong Zheng, General Zhenbei". The day she repaired the sign, she received a strange letter with handwriting as hard as a knife: "I have reported the person who smashed your sign to the official position for you." She wrote back: "How did the general know it was me?" The second letter only had four words: "Yours I bought some medicinal food." From then on, there was a constant exchange of letters between the north and the south. In his letter, he said that there was a shortage of medicinal materials at the border, and she sent her a prescription for medicinal food; she said that the new store in the Spring Festival was targeted by local snakes, and he had someone send a military supplies purchase token every other month. Later, Murong Zheng was transferred back to Beijing to report on his duties. There were no military memorials in his bag, only a stack of letters tightly wrapped in oil paper - all written by her.
