The sanitary system

Look at the military strength of the Ming Dynasty from all levels
Ming dynasty Military strength weapons Qi Jiguang The sanitary system
01-20
What is the difference between a guard and a house soldier? The former comes from the aristocratic class, while the latter comes from a "lowly nationality"
Guards The sanitary system
01-12
The Ming Dynasty had more than 2 million troops, strong soldiers, why did the generals rely on Jia Ding to fight?
Ming dynasty The sanitary system Liaodong Border Troopers
01-05
Why did the Ming Dynasty's health center system go into decline? Is the sanitation system still applicable in today's society?
Ming dynasty The sanitary system Sanitary Shelter Zhu Yuanzhang
12-16