An expert from the University of Tokyo Bioengineering Research Center used a bacterium as a mediator to inject the soybean gene into rice DNA to promote ferritin production in rice. As a result, it was found that the iron content of this rice is very rich. Consumption of about 200 grams of this kind of rice can basically meet the human needs of iron. Because about 30% of the people who eat rice as the staple food in the world suffer from malnutrition or anaemia due to iron deficiency, high ferritin rice will change the human body. Iron conditions provide an effective solution. At present, this ferritin gene improvement technology has been applied to more than 30 varieties of rice.