She discovered that the local "Guanyin soil" contains rare clay minerals, and fern root powder is mixed in during firing, which can form a microporous structure and slowly release nutrients. The first batch of "edible pottery bowls" saved half of the villagers, but attracted the covetous attention of Pao Gehui. In order to protect the secret recipe, she cooperated with Asano, a Japanese ceramic scholar who came to China to investigate, claiming that the technology originated from "envoys sent to Tang Dynasty in the Tang Dynasty". On the day of the Marco Polo Bridge Incident in 1937, Asano confessed his true identity to her - a member of the Japanese Anti-War League, and was ordered to collect data on people's livelihood to convince the military that "the cost of occupation is too high." He brought the formula back to China to lobby. What Zhou Ci and others came to was the "Asahi Shimbun" which published "Asano committed suicide in prison" and a secret letter: "The formula has been deposited in the Imperial Patent Office and can be retrieved after defeat. Please live."
