2 sentences

1. 这个方案只是改头换面，核心内容一点没变。

   zhè​ge fāng'àn zhǐ​shì gǎi​tóu​huàn​miàn, hé​xīn nèi​róng yī​diǎn méi biàn.

   This proposal is just a cosmetic change; the core content remains the same.

   Source: Dong Chinese Dictionary

2. 经过重新装修，这家旧书店改头换面，成了网红打卡地。

   jīng​guò chóng​xīn zhuāng​xiū, zhè jiā jiù shū​diàn gǎi​tóu​huàn​miàn, chéng le wǎng​hóng dǎ​kǎ dì.

   After being renovated, the old bookstore was transformed into a popular social media destination.

   Source: Dong Chinese Dictionary