In the year 1452 of the Dà Yùn era, Zhélóng Prefecture, Gāoliǔ County.,When the sun was high in the sky, and the sound of hammering 'clanging' could faintly be heard from the front yard, the apprentices finally got their breakfast and had a short break.,After swallowing half a bowl of congee and rice soup, Li Yuan's mind was still preoccupied.。