Why did Bing Xin lend her love by paper boat?

Bing Xin's poem "Paper Boat" reflects a deep yearning for his mother who is wandering outside. The whole poem is full of thoughts and calls for mother. Different from most poems with similar themes, Bing Xin chose a novel writing perspective, used childlike innocence, and chose a paper boat as an intermediary from the children's game world to pin her infinite thoughts on her mother. The paper boat shows people the image of wandering and helplessness, and then expresses an infinite yearning for his mother, and also shows people the author's childlike heart of missing his motherland.