Answer:
His Hometown
Explanation:
床前明月光
Chuáng qián míng yuè guāng
In front of my bed is the bright moonlight
疑是地上霜
Yí shì dìshàng shuāng
I suspect it is frost on the ground.
舉頭望山月
Jǔ tóu wàng shān yuè
I raise my head to look at the mountain moon,
低頭思故鄉
Dītóu sī gùxiāng
Then I lower my head, thinking of my hometown.
This is a quote from the poem that specifically states what he thinks about.