关于 + Topic + (的 + Noun)
关于 means "about," "regarding," or "concerning" and introduces the topic of discussion. It is placed at the beginning of a sentence or before the topic noun. For example, 关于这个问题 means "regarding this issue" and 关于中国的书 means "a book about China."
关于明天的会议,你有什么想法?
guānyú míngtiān de huìyì, nǐ yǒu shénme xiǎngfǎ?
What are your thoughts about tomorrow's meeting?
我最近在看一本关于历史的书。
wǒ zuìjìn zài kàn yī běn guānyú lìshǐ de shū.
I've been reading a book about history recently.
关于这件事,我们以后再谈吧。
guānyú zhè jiàn shì, wǒmen yǐhòu zài tán ba.
Let's talk about this matter later.