Space Underneath equation and align

Question

useshortskip in nccmath manually adjusts the space above align but doesn't adjust the space below align. The following example produces different results in pages 1 and 2.

\documentclass{article}
\usepackage{amsmath,nccmath}
\begin{document}
hello. hello. hello. hello.
\begin{equation}
y=x.
\end{equation}
hello. hello. hello. hello. hello. hello. hello. hello.\clearpage
hello. hello. hello. hello.\useshortskip
\begin{align}
y=x.
\end{align}
%%%%%%%%%%%HOW CAN I ADJUST THIS SPACE?%%%%%%%%%%%
hello. hello. hello. hello. hello. hello. hello. hello.
\end{document}

How can I control the space following align? I tried to apply align right after \end{align}, but this way leaves a very narrow space different from the space by \end{equation}.

P.S. amsmath - redefine align to support \abovedisplayshortskip and \belowdisplayshortskip? shows some solutions.

\documentclass{article}
\usepackage{amsmath,nccmath}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{xpatch}
\makeatletter
    \xpatchcmd
        {\NCC@ignorepar}
        {\global}
        {\belowdisplayskip\belowdisplayshortskip\global}
        {}
        {}
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
hello. hello. hello. hello.
\begin{equation}
y=x.
\end{equation}
hello. hello. hello. hello. hello. hello. hello. hello.\clearpage
hello. hello. hello. hello.\useshortskip
\begin{align}
y=x.
\end{align}
hello. hello. hello. hello. hello. hello. hello. hello.
\end{document}