The photo, taken on April 17, shows workers making Xintian vinegar tofu at a workshop of a company in Sanshui Village, Shiyang Town, Xintian County. In recent years, the county has leveraged its selenium-rich land resources and adopted the mode of "company + base + farmers" to develop Xintian soybean industry and produce various bean products that sell well in Changsha, Guangdong, Hong Kong, and Macao. Xintian soybean is a national geographical indication product. (Photo/Liu Guixiong and Liu Simin)

The photo, taken on April 17, shows workers making Xintian vinegar tofu at a workshop of a company in Sanshui Village, Shiyang Town, Xintian County. In recent years, the county has leveraged its selenium-rich land resources and adopted the mode of "company + base + farmers" to develop Xintian soybean industry and produce various bean products that sell well in Changsha, Guangdong, Hong Kong, and Macao. Xintian soybean is a national geographical indication product. (Photo/Liu Guixiong and Liu Simin)

The photo, taken on April 17, shows workers making Xintian vinegar tofu at a workshop of a company in Sanshui Village, Shiyang Town, Xintian County. In recent years, the county has leveraged its selenium-rich land resources and adopted the mode of "company + base + farmers" to develop Xintian soybean industry and produce various bean products that sell well in Changsha, Guangdong, Hong Kong, and Macao. Xintian soybean is a national geographical indication product. (Photo/Liu Guixiong and Liu Simin)

The photo, taken on April 17, shows workers making Xintian vinegar tofu at a workshop of a company in Sanshui Village, Shiyang Town, Xintian County. In recent years, the county has leveraged its selenium-rich land resources and adopted the mode of "company + base + farmers" to develop Xintian soybean industry and produce various bean products that sell well in Changsha, Guangdong, Hong Kong, and Macao. Xintian soybean is a national geographical indication product. (Photo/Liu Guixiong and Liu Simin)

The photo, taken on April 17, shows workers making Xintian vinegar tofu at a workshop of a company in Sanshui Village, Shiyang Town, Xintian County. In recent years, the county has leveraged its selenium-rich land resources and adopted the mode of "company + base + farmers" to develop Xintian soybean industry and produce various bean products that sell well in Changsha, Guangdong, Hong Kong, and Macao. Xintian soybean is a national geographical indication product. (Photo/Liu Guixiong and Liu Simin)