lídiàn qián wèn qīngchǔ dǎlǐ bùzhòu bǐ zhǐ kàn gāng zuòwán de yàngzi gèng zhòngyào

离店前问清楚打理步骤，比只看刚做完的样子更重要。

Asking about the maintenance steps before leaving the shop is more important than just looking at how it looks right after it is done.