Reborn in Five Kingdoms: A Palace of Memories from the Start

Reborn in another world with all his modern memories:

In the Eastern Lands, the Xiao Kingdom's fighting aura soars to the heavens. Using modern strategy to assist a wise ruler, he promotes agriculture and sericulture, reforms the administration, and trains a new army. He advances cautiously through the political chess game, supporting a crumbling kingdom before it falls. (A romance between two strong leads, with some satisfying moments later on, focused on martial arts)