Why was the economy and culture so developed in Song Dynasty?

I think the economic development of the Song Dynasty has the following reasons:

First, because the development of the previous Tang Dynasty was so good, the economic strength of the Tang Dynasty was already very strong, the development of science and technology was very advanced, and the cultural development was quite good. Although it weakened later and died, even a sunken country has three nails, let alone a country that was in full swing. Even if it is weak, it still has a foundation. As long as it is reintegrated, it will be restored, so the song dynasty.

Second, because there were not so many restrictions on the development of commodity economy in Song Dynasty, there was enough room for the development of commodity economy. For example, the Song Dynasty broke the time and space restrictions and no longer banned curfews. The relaxation of these policies will stimulate the development of commerce, and also make the economy of Song Dynasty develop so fast and have a solid economic foundation. The Riverside Scene at Qingming Festival in Song Dynasty is enough to prove all this.

Thirdly, I think it was the hard work of the people of the Song Dynasty that propped up the economy of the Song Dynasty. Because the grain output in the Song Dynasty is extremely high, it can not only provide enough food and clothing for the people in the Song Dynasty, but also allow the people in the Song Dynasty to exchange some special foods with ethnic minorities. It is precisely because of Qi Xin and the concerted efforts of Qi Xin, the people of the whole country, that the national economy has developed so fast and developed.