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

Here is Why You Need An Adapter

The outlet and plug type used in China are A, C and I and in Rwanda are C, E, F and G. This is how they look like.

Rwanda

In Rwanda, outlets of type C, E, F and G are in use.

Type C

Type E

Type F

Type G

China

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

Type A

Type C

Type I