There will be Chang 'e in the Confucius Temple when it rains heavily in the moonlight. What does this poem mean?

This is a poem from the new TV series "Five Shaolin Ancestors". This poem was written by Miss Paofen on the silk scarf for Asun. This poem is about missing someone. It is about a woman who misses the person she likes and expects her hero to return as soon as possible. This poem expresses her deep yearning.

Poetic background: In order to save Miss Paofen, Asun was willing to sacrifice his life to fight General Black regardless of danger. His behavior touched Miss Paofen. On the contrary, Miss Paofen's fiance, in this case, pretended to be unconscious for her own safety, regardless of her fiancee's safety, to avoid General Black's murder. This behavior chilled Miss Paofen, who changed her view of her fiance and secretly promised Asun's heart. At this time, although Asun had a narrow escape, she finally recovered after receiving a blood transfusion from Miss Paofen. In order to overcome the shadow in General Black's heart and answer Master's request, Hou Asong went to see Master Uncle Yangshan to find a way to overcome the shadow in his heart. While studying martial arts at Uncle Yangshan, he received a poem from Miss Paofen.