Hi! If I understand your question correctly and this is about the facetted look once re-meshed, that's expected behaviour with low-poly meshes. The resulting, dense mesh is the same shape as the low-poly just with a higher density, which results in a much more defined shading. To get a smooth surface you will have to apply…
If you see faceted shading on hi res you might beveled each edge first accidentally or give each edge a crease (shift+E) or you just have subdiv modifier in "simple" mode.
Ahhh so to understand, the reason I get these issue as shown in this picture here with the arrows pointed at it is expected because dense mesh is the same shape as the low-poly just with a higher density that results in the defined shading. So subdiv modifier still came up with the same kind of shading. Yep i experimented…