You Do Need power plug adapter while traveling from Palestine to China.

Here is Why You Need An Adapter

The outlet and plug type used in China are A, C and I and in Palestine are C and H. This is how they look like.

Palestine

In Palestine, outlets of type C and H are in use.

Type C

Type H

China

In China, outlets of type A, C and I are in use.

Type A

Type C

Type I