  Recently, Wang, Wei and Zhang define the recollement of extriangulated
categories, which is a generalization of both recollement of abelian categories
and recollement of triangulated categories. For a recollement $(\mathcal A
,\mathcal B,\mathcal C)$ of extriangulated categories, we show that $n$-tilting
(resp. $n$-cotilting) subcategories in $\mathcal A$ and $\mathcal C$ can be
glued to get $n$-tilting (resp. $n$-cotilting) subcategories in $\mathcal B$
under certain conditions.
