Question 175, Given point $E(m, n)$ is a fixed point inside the parabola $y^{2}=2 p x(p>0)$, two lines with slopes $k_{1}$ and $k_{2}$ are drawn through $E$, intersecting the parabola at points $A, B$ and $C, D$ respectively, and $M, N$ are the midpoints of segments $A B$ and $C D$ respectively.
(1) When $\mathrm{n}=0$, and $\mathrm{k}_{1} \cdot \mathrm{k}_{2}=-1$, find the minimum value of the area of $\triangle E M N$.
(2) If $k_{1}+\mathrm{k}_{2}=\lambda(\lambda \neq 0$, and $\lambda$ is a constant), prove that the line $\mathbb{N N}$ passes through a fixed point.