"Very interesting" can be translated to "非常有趣" in Chinese.

The phrase "very interesting" is a common expression used to express that something is intriguing or engaging. It is used in casual and formal conversations, and is a widely recognized phrase in the Engpsh-speaking world.

Here are some examples of "very interesting" in a sentence:

That book you recommended is very interesting, I couldn't put it down. (那本你推荐的书非常有趣，我真的放不下。)
The lecture on ancient history was very interesting, I learned a lot. (关于古代历史的讲座非常有趣，我学到了很多。)
The conversation with her was very interesting, she's such a knowledgeable person. (和她的谈话非常有趣，她是一个很有知识的人。)