At present, the registered population is 210.3 million, making it the largest county in China. The rivers are densely covered and the transportation is convenient. There is a red river in the south and a spring river in the north, among which natural rivers such as Guhe River, Herun River, Xianhe River and Lu 'an River flow eastward, while artificial rivers such as Ailin River and Jienan River run through the north and south. Fulin, Linyi and Lin Xin highways are the main arteries connecting east and west traffic, while Lin 'ai, Lin 'nan and critical highways have main roads connecting north and south. The main food crops are wheat, soybean, sorghum, corn and red taro. The cash crops mainly include cotton, sesame, rape, tobacco, peanuts, mint, kenaf and Vitex negundo. Medicinal crops mainly include Radix Rehmanniae, Radix Paeoniae Alba, Rhizoma Atractylodis Macrocephalae, Rhizoma Pinelliae, Rhizoma Acori Graminei, Flos Chrysanthemi, Herba Andrographis, Maoeryan and Herba Portulacae. Cucumber and vegetable crops mainly include watermelon, pumpkin, cucumber, melon, Chinese cabbage, radish, spinach, coriander, celery, leek, garlic, ginger, eggplant, pepper and tomato. Timber forests mainly include paulownia, Toona sinensis, Melia azedarach, Sophora japonica, poplar, willow, pine and cypress, Sang Yu and Catalpa bungeana. Peach, plum, apricot, pear, pomegranate, apple, grape, Chinese toon, etc. The injected trees are sorted. The main animals are cattle, horses, donkeys, mules, pigs, sheep, dogs, rabbits, chickens, ducks, geese, cats, pigeons, silkworms and bees. Fish farming says that there should be carp, silver carp, soft-shelled turtle, herring, loach, goldfish and so on.