xiǎohuá dǎkāi shǒujī dìtú ， gàosù tā xiān zuò sānhào xiàn ， zàihuàn wǔhàoxiàn ， lǎorén tīngdé hěn rènzhēn ， xiàchē qián yòu shuō le yībiàn lùxiàn 。

小华打开手机地图，告诉他先坐三号线，再换五号线，老人听得很认真，下车前又说了一遍路线。

Xiaohua opened the map app and told him to take Line 3, then transfer to Line 5; the old man listened carefully and repeated the route before getting off.