Blueberries. According to relevant information, Russian St. Petersburg is rich in blueberries. Purple-black blueberries are packed in a plastic cup, and 20 yuan has a cup, which is sweet and sour. The Russian Federation, also known as Russia, is the capital of Moscow. Its territory spans Eurasia and borders 14 countries, with a total area of 1709820 square kilometers and a national border of 60933 kilometers.