You Do Need power plug adapter while traveling from Myanmar (Burma) to Christmas Island.

Here is Why You Need An Adapter

The outlet and plug type used in Christmas Island is I and in Myanmar (Burma) are A, C, D, G and I. This is how they look like.

Myanmar (Burma)

In Myanmar (Burma), outlets of type A, C, D, G and I are in use.

Type A

Type C

Type D

Type G

Type I

Christmas Island

In Christmas Island, outlets of type I are in use.

Type I