According to Baidu Encyclopedia and official website of Jiangxi Cohen Animal Husbandry Group, Gannan navel orange is a specialty of Ganzhou City, Jiangxi Province, and a landmark product of chinese national geography. "Lime" is a characteristic navel orange in Longgou Township. Under the guidance of technicians, local fruit farmers tried to use the traditional method of killing insects in rice fields, that is, the method of improving limewater was applied to fruit protection technology. "Lime" is ugly, but its price is higher than that of ordinary Gannan navel orange, so it is different from Gannan navel orange.