When were the two migrations in ancient China?

Many population movements are basically due to war, but two population movements are the most famous in non-war times.

One: The migration of Sophora japonica in Ming Dynasty started from the third year to the fifteenth year of Hongwu, and then went through more than twenty years continuously.

Two: Huguang and Sichuan were filled in by Qing Dynasty. From the seventh year of Kangxi, 1699 began a large-scale migration, which lasted for decades and basically ended at 1800. * * * Experienced 13 1 year.