The bird flew back from the south to the north.

The bird flies back to the north from the south. The bird is ready to travel, from its warm hometown in the south to its new home just established in the north.

Analysis: Writing birds as adults is an anthropomorphic rhetorical method, that is, personifying things and turning things without human actions and feelings into things with human actions and feelings.

Methods of changing anthropomorphic sentences:

First add names, such as "brothers and sisters, brothers and sisters, grandparents" and so on. Take "willow branches swaying in the wind" as an example, which can be changed to "willow branch sister".

Second: change the name, for example, the "willow branches" above can be changed to "willow hairs". ?

Third, change the verbs in the sentence into things that people do. For example, "swinging in the breeze" can be changed to "dancing in the breeze". ?