In winter, Dingxi, Gansu. The Loess Plateau is a yellowish brown color. Under the sunlight, the deep ravines and thick soil layers shimmer. On the wilderness, the Dingxi Neiguan Green Vegetable Modern Industrial Park located in Guanying Town, Anding District, is full of vitality: the neatly arranged seedling trays have sprouted vegetable shoots, shining brightly; The emerald green vegetables grow on different shaped stands, with "building green" as walls; Rows of tomato seedlings are over one meter tall, growing in clusters... "These are new varieties planted using new technologies." Industrial park technician Liu Dongdong said that using nutrient solution circulation for soilless cultivation can overcome previous soil continuous cropping obstacles, reduce pests and diseases, and increase yield per unit area. Looking up, the three story glass connected greenhouse may seem ordinary, but it is actually equipped with internal and external shading systems, skylight systems, automatic control systems, etc. It can also monitor and control temperature, humidity, lighting, etc. in real time through mobile phones. Liu Dongdong opened the mobile app and various data indicators immediately popped up on the screen. Tap the "Open" button on the skylight, and in no time, gusts of cool wind will blow from inside the greenhouse, and the temperature index will also change accordingly. "In the past, it was mostly dry land, where wheat and potatoes were barely grown. Local people mainly relied on purchasing vegetables in winter," said Cheng Siliang, the person in charge of the industrial park. "When it comes to Dingxi, many people think of it as' bitter as the world '.". He is deeply moved by the changes in vegetable cultivation over the years. Replacing dry land with vegetable fields and building plastic greenhouses, with the accelerated adjustment of agricultural structure, especially after the water diversion project of the Taoyuan River was completed at the end of 2014, vegetable cultivation gradually entered the "fast lane" of development. Chen Kejian, a villager from Lijiaju Village, Fengxiang Town, Anding District, has gone through different stages of outdoor vegetable planting in the field, planting in 5 simple greenhouses, and large-scale planting in 50 greenhouses. "At the beginning of planting, when encountering extreme weather, the vegetables in the field may go extinct," he recalled. Later, greenhouses were built, facilities were constantly upgraded, and technology became more and more mature. "The variety of vegetables became more diverse, the yield steadily increased, and sales and prices also increased.". In his greenhouse, integrated water and fertilizer equipment can achieve precise irrigation and fertilization, and digital monitoring equipment can intervene in the greenhouse environment in a timely manner. It is the time for vegetables to mature, and a large area of verdant rapeseed is waiting to be harvested. Four or five workers are busy picking, sorting, and baskets. The standardized and large-scale planting mode, as well as a complete cold chain logistics and sales distribution industry chain, enable fresh vegetables harvested to be quickly delivered to the market and serve consumers on the dining table. It is understood that in addition to being supplied locally, Dingxi vegetables are also favored in the southern market, becoming a distinctive business card of Gansu agriculture. At present, Dingxi has established more than 40 direct sales windows in more than ten provinces and cities such as Shanghai and Zhejiang. Chang Jun, the market sales manager of Dingxi Shunji Vegetable Farmers Professional Cooperative, said that since the beginning of this year, the cooperative has only shipped 150 carts of vegetables to Nanchang, Jiangxi, totaling about 4500 tons. At the same time, vegetable cultivation has also driven surrounding villagers to work nearby, become wealthy, and increase their income. After transferring his own land, Chen Jun, a villager from Xianfeng Village in Fengxiang Town, went to work in the local vegetable greenhouse, responsible for seedling cultivation, planting, fertilization, and weeding. "With intelligent facilities, work has become easier and income has become more stable." He can now earn six dollars a year