里面

里面

Inside.

Here, '里面' denotes the interior of the 'box', indicating its spatial position as containing something.

箱子里面有一本书。

There is a book inside the box.

In this sentence, '里面' specifies the inside area of an artwork, emphasizing contained aspects of it.

画的里面有一些隐藏元素。

Inside the painting, there are some hidden elements.

Here, '里面' metaphorically refers to the internal aspect of the 'concept', signifying a figurative use.

问题的核心实际上在它的概念里面。

The core of the problem is actually within its concept.