What year was the first year of Hongwu in Ming Dynasty?

The first year of Hongwu in Ming Dynasty 1368.

From May to August in the first year of Hongwu in the Ming Dynasty (1368), the Northern Expedition destroyed the Yuan Dynasty.

After the Ming army captured Shandong (see Ming attacking Shandong), Henan (see Ming attacking Henan) and Tongguan, the capital of the Yuan Dynasty (now Beijing) was already in the arc encirclement of the Ming army, and the conditions for capturing the capital were ripe.

On May 21st, the first year of Hongwu, Zhu Yuanzhang, the Ming emperor, arrived in the capital of the Song Dynasty (now Kaifeng) to discuss with the generals the decision to capture the capital of the Yuan Dynasty.

He adopted the idea put forward by Xu Da, a general of the State of Lu, and according to the instructions of the map: "The land in the north is flat and open, which is conducive to riding and fighting. It is necessary to be prepared. It is advisable to choose a good soldier as the pioneer, a general to supervise the amphibious division, and then go down to the millet in Shandong to pay for it. From Ye (now southwest of Linzhang, Hebei Province) to Zhao (now Handan, Hebei Province), I transferred to Linqing and went north to take it, but foreign aid was not as good as it was. In order to realize this strategic intention well, he also gave Xu Da his own "March Map".