In 719 AD, during the "Kaiyuan Heyday", the Tang Dynasty's national power reached an unprecedented heyday. At this time, the country's economy is prosperous, the country is peaceful and the people are safe, and it is a wonderful scene of peace and prosperity. The prosperous land in the south of the Yangtze River, where the spring rain is like wine and willows are like smoke, is naturally more prosperous. Let's see how a little girl from modern times starts her new life in the prosperous Jinling where she leans on her horse and sings...