According to the topic:

Xiaowen age = Xiaowu age +5, Xiaowen is older.

Xiao Wei's age = Xiaowu's age -5 years old, Xiaowu is even older.

The age relationship between them is: Xiaowen > Xiaowu > Xiao Wei.

So, Xiaowen is much bigger than Xiao Da:

= Xiaowen's age-Xiao Wei's age

= Xiaowu Age +5- (Xiaowu Age -5)

= Xiaowu Age +5- Xiaowu Age +5

= 10 (years old)

So: Xiaowen is ten years younger and ten years older.

To solve this kind of problem by expanding data, we must first understand the known conditions given in the problem and clarify the relationship between the known conditions, and then think about how to deduce the answer we want to solve from the known conditions.

You can also deduce what kind of condition you need from the answer you want to solve, how to get this condition, and then form a solution idea.