这栋楼的外表很旧，但里面装修得很现代。

Zhè dòng lóu de wàibiǎo hěn jiù, dàn lǐmiàn zhuāngxiū de hěn xiàndài.

The exterior of this building is very old, but the interior is renovated in a modern style.

不要只看外表，要了解一个人的内心。

Búyào zhǐ kàn wàibiǎo, yào liǎojiě yí ge rén de nèixīn.

Don't just look at appearances; you need to understand a person's inner world.

他外表冷淡，其实非常关心身边的人。

Tā wàibiǎo lěngdàn, qíshí fēicháng guānxīn shēnbiān de rén.

He seems indifferent on the outside, but actually cares a lot about the people around him.