kàn dào chū kǒu qián, xiān què rèn zì jǐ shì bù shì yǐ jīng kàn wán xiǎng kàn de dì fāng

看到出口前，先确认自己是不是已经看完想看的地方。

Before you see the exit, first confirm whether you have already seen all the places you want to see.