Japan's emotional response to the Song Dynasty can be attributed to the profound cultural and historical impact that the Song period had on Japan. The Song Dynasty, which flourished from 960 to 1279 AD, was a time of significant cultural and technological advancements in China. This era saw the development of sophisticated art, literature, and philosophy, which deeply influenced neighboring countries, including Japan.

The Song Dynasty's influence on Japan was multifaceted. Firstly, the Song period was marked by a flourishing of Chinese art, including painting, calligraphy, and ceramics. These artistic styles were highly sought after in Japan, and Japanese artists and artisans studied and emulated them. For instance, the Japanese tea ceremony, known as "chanoyu," was heavily influenced by the Song Dynasty's tea culture, which emphasized simplicity, elegance, and harmony.

Secondly, the Song Dynasty's advancements in technology, particularly in the fields of agriculture and military, were also adopted by Japan. The introduction of the rice seedling transplanting method and the use of gunpowder in warfare were significant contributions that improved Japan's economy and defense capabilities.

Moreover, the Song Dynasty's literary and philosophical works had a profound impact on Japanese thought. The Neo-Confucianism that emerged during the Song period became a major influence on Japanese education and governance. The concept of "wu wei" (the way of non-action), which emphasized harmony with the natural world, was particularly influential in shaping Japanese aesthetics and philosophy.

Data from the Japanese government's Ministry of Education show that during the Heian period (794-1185 AD), there was a significant increase in the number of Japanese students studying in China. This indicates the desire of the Japanese elite to learn from the cultural and intellectual achievements of the Song Dynasty.

In conclusion, Japan's emotional response to the Song Dynasty can be understood as a result of the profound cultural and historical impact that the Song period had on Japan. The influence of the Song Dynasty in art, technology, and philosophy left an indelible mark on Japanese culture, fostering a sense of admiration and respect for this ancient Chinese dynasty.