What does it mean that "monkeys and birds are still alert to your orders, and the wind and cloud want to protect your castle"?

"Monkeys and birds are still alert to your orders, and the wind and clouds are eager to protect your fortress." Ape bird's hesitation is to frighten the Prime Minister's strict military orders, and the wind and cloud often protect the fence of its military base.

From Li Shangyin's "Prepare Posts" in Tang Dynasty

Monkeys and birds are still alert to your orders, and the wind and clouds are eager to protect your fortress.

You are the owner of the brush, a wise general, but your emperor, defeated, rode a prison car.

He is very talented in wind music, but he is not as lucky as the two Shu generals who died in battle. Isn't it easy?

Although a temple was built for you in your birthplace, you never finished singing the song of the holy mountain.

Li Shangyin was born in Xingyang, Zhengzhou, and Qinyang, Hanoi (now Jiaozuo, Henan). He is good at poetry writing, and his parallel prose also has high literary value. He is one of the most outstanding poets in the late Tang Dynasty. His poems are novel in conception and beautiful in style, especially some love poems and untitled poems are touching, beautiful and popular. However, some poems are too obscure to be solved, and there is even a saying that "poets always love Quincy and hate that no one writes about Jian Zheng". Caught in the struggle between Niu and Li, I was frustrated all my life. After his death, he was buried in his hometown of Qinyang (now the junction of Qinyang and Aibo County in Jiaozuo City, Henan Province). His works are included in Li Yishan's poems.