Ān / zhuāng / shí / yào / xiān / bǎ / kǎ / sǔn / duì / zhǔn / zài / qīng / qīng / àn / xià / qu / de安装时要先把卡榫对准,再轻轻按下去。When installing it, align the latch first and then press it down gently.