I can't buy Jin Xiong's math in the first grade. According to relevant data, Jinxiong Mathematics belongs to the picture book of enlightenment mathematics, and its mathematical knowledge only stays at the kindergarten level, so it is impossible to buy Jinxiong Mathematics in the first year of high school. You can buy Jin Xiong's advanced mathematics. Jin Xiong's mathematics belongs to the content of enlightenment mathematics and belongs to elementary mathematics. Jin Xiong's gold medal mathematics belongs to advanced mathematics and belongs to a higher level.