  Let $n\geq 4$. In this paper, we construct a sequence of smooth Riemannian
metrics $g_i $ on $\mathbb{R}^n$ such that: (1) $g_i = g_{\rm Euc} $ outside
the standard Euclidean unit ball $B_1 (0) \subset \mathbb{R}^n $, (2) ${\rm
Ric}_{g_i} \geq -\Lambda $ and $ {\rm diam} \left( B_1 (0) ,g_i \right) \leq D
$ for some $\Lambda ,D>0$ independent of $i$, (3) The pointed Gromov-Hausdorff
limit of $(\mathbb{R}^n ,g_i) $ is a topological orbifold but not a topological
manifold.
  As a consequence, for $n\geq 4$, we can find a sequence of tori $(T^n , g_i
)$ with Ricci lower bound and diameter bound such that the Gromov-Hausdorff
limit is not a topological manifold. This answers a question of
Bru\`e-Naber-Semola [arXiv:2307.03824] in the negative. In $4$-dimensional
case, we prove that the Gromov-Hausdorff limit of tori with $2$-side Ricci
bound and diameter bound is always a topological torus. In the K\"ahler case,
the Gromov-Hausdorff limit of K\"ahler tori of real dimension $4$ with Ricci
lower bound is always a topological orbifold with isolated singularities, and
the only type of singularities is $\mathbb{R}^4 / Q_8 $.
