  Very recently, the BESIII collaboration reported a charged hidden-charm
structure with strangeness in the recoil mass of $K^+$ of a process $e^+e^-\to
D_s^{*-}D^0K^+$ or $D_s^{-}D^{*0}K^+$, which is named as $Z_{cs}(3985)^{-}$.
The newly observed charged structure can be treated as a partner structure with
strangeness of well-known $Z_{c}(3885)^{-}$ reported in a process $e^+e^-\to
D^{*-}D^0\pi^+$. In this work, we propose a novel picture to understand the
nature of $Z_{cs}(3985)$. By performing a combined analysis for the line shape
of the recoil mass distribution of $K^+$ at five energy points $\sqrt{s}=4.628,
4.641, 4.661, 4.681, 4.698$ GeV, we find that the $Z_{cs}(3985)$ can be
explained as a reflection structure of charmed-strange meson
$D_{s2}^{*}(2573)$, which is produced from the open-charm decay of $Y(4660)$
with a $D_s^*$ meson. Furthermore, we predicted the angular distribution of
final state $D_s^{*-}$ in process $e^+e^-\to D_s^{*-}D^0K^+$ based on our
proposed reaction mechanism, which may be an essential criterion to test the
non-resonant nature of $Z_{cs}(3985)$ further.
