doctor stepped heavily and lightly in the snow, greeting acquaintances he passed along the way from time to time."Dr. Hu, are you back from your rounds""Oh, yeah, yeah. I just finished seeing a patie...g is moved, all the vassal kings will be affected. Under the principle of 'lips dying and teeth cold', if they unite, the court will be in danger.”The drawbacks of the enfeoffment system are glaringly...