Chinese particle 呢(ne) can be used to ask reciprocal questions, also known as "bounce back" questions. 呢 can also be used to ask questions such as "what about" or "how about".

Structure

And it's as simple as that. Say what you want to ask about, then stick 呢 on the end. A very common way to use this is to return a question after being asked it. The classic example is this exchange:
A: 你 好 吗？
B: 我 很 好。你呢？
A: 我 也 很 好。

Examples
More 呢 examples (each of these can be translated as a "what about" question):

Zhèɡe dōnɡxi ne ？
这个东西 呢？
What about this thing?