An aerial drone photo taken on March 19, 2025 shows drones working at a canola field in Shangbai Village, Deqing County of east China's Zhejiang Province. With the approaching of spring equinox, or Chunfen in Chinese, the fourth solar term in the Chinese lunar calendar which will fall on March 20 this year, farmers across the country are busy working at fields. (Photo by Xie Shangguo/Xinhua)