Are Dongmen Xing and Orphan Xing narrative poems?

Yes.

1. The Han Yuefu "Orphan's Journey" and the Yi ancient poem "Bamboo Immortal" are both narrative poems that reflect the fate of orphans.

2. The achievements of narrative poetry in the Yuefu poems of the Han Dynasty are extremely outstanding and have become a symbol of the maturity of ancient Chinese narrative poetry. For example, the narrative poetry in the Yuefu folk songs of the Han Dynasty is famously "A Journey to the East Gate".

"Orphan's Journey" is a Han Yuefu poem and belongs to "Xianghe Song Ci".