Rice: In the late 1950s, a cave called Xianren Cave was discovered in Dayuan Basin, Wannian, Jiangxi Province. Thirty years later, the world's earliest cultivated rice silica specimen was unearthed in this cave site, which advanced the rice planting history in China discovered in Hemudu, Zhejiang by nearly 5,000 years, and Wannian Fairy Cave became the source of rice planting in the world. The annual output of rice in China is 200 billion kilograms, accounting for more than half of the world output, and the average output per unit area is 1.6 times of the world level. Rice is the main grain crop in China and occupies an extremely important position in food security.

Xiaomi: Wu 'an, Hebei Province is the birthplace and hometown of Xiaomi, with a planting history of more than 7,300 years. At the site of magnetic mountain culture in Cishan Town, Wu 'an City, experts excavated a large amount of millet ash. Millet is domesticated by wild "Setaria viridis". Today, millet cultivated all over the world is handed down from China. The cultivated area of millet in the world is about 654.38 billion mu, with the largest area and the highest total output in China, which is mostly distributed in the middle and lower reaches of the Yellow River, Northeast China, Inner Mongolia and other places.