Jiangsu and Zhejiang provinces-in the thirteenth year of the Yuan Dynasty, the Southern Song Dynasty perished, and Jianghuai Province was located in Yangzhou, which unified the two provinces, also known as Huaidong Province and Yangzhou Province. Twenty-one years, moved to the province of Hangzhou, called Jiangsu and Zhejiang provinces. In the twenty-third year, Yangzhou was also ruled, which was called Jianghuai Province. In twenty-six years, he moved to Hangzhou. In 28 years, Jiangbei County was transferred to Henan Province and renamed Jiangsu and Zhejiang Province. In the third year of Dade (1299), Fujian entered the province and belonged to Jiangsu and Zhejiang provinces. Its jurisdiction includes southern Jiangsu, Zhejiang and Fujian provinces and parts of Jiangxi.

I don't quite understand the second question. Do you remember the administrative divisions yourself? Or did the teacher tell me to remember?

One thing I insist on is reading pictures (hehe, it's common but practical). Compared with Tu Tu, the effect is better than rote learning!

I hope it helps you,,,,