qǐng jǐnliáng jiǎnshǎo wàichū, chūmén shí bìkāi dìxià tōngdào hé jīshuǐ lùduàn

请尽量减少外出，出门时避开地下通道和积水路段。

Please try to minimize going out, and avoid underpasses and flooded road sections when you do leave home