The meaning of this sentence is: Every house has lights on, but not one is left for me. In the past, at home, our parents would prepare hot meals for us and wait for us to go back. Now we cannot go home when we are away. Even though the neon lights in the city are flashing at night, none of the lights are left for me, expressing my hard work and struggle in a foreign country. His helplessness and sadness also expressed his longing for his parents.
The following is a relevant introduction to homesickness poems:
Homesickness actually means missing home. Missing family means missing relatives in hometown, missing people when seeing things. Homesickness poems mainly describe the desolate and lonely state of mind of wanderers living in foreign lands and their longing for their hometown and relatives. For example, Meng Haoran's "Staying on the Jiande River", Wen Tingyun's "Morning Journey to Shangshan", Wang Wei's "Remembering Shandong Brothers on September 9th", Qing Wang Shizhen's "On the River", etc.
The content of travel poems is nothing more than what the lyrical protagonist sees, hears, thinks, feels, and sighs during his journey. It refers to the feeling of homesickness and family longing caused by being stranded in a foreign country for a long time without being able to go home. As a tourist prodigal, what he sees in his eyes, hears in his ears, and feels in his heart all contain the vision of his distant hometown and the longing for a warm family that are triggered by this.
In ancient times, some poets lived abroad for a long time, stranded in other places, or wandered in other places, or sought official careers, or were demoted to their posts, or traveled to famous mountains and rivers, or visited relatives and friends. The so-called "Jilu", It means staying in a foreign country for a long time due to the above reasons. This type of poem mostly expresses lingering nostalgia, endless yearning for loved ones and depression.
The above information refers to Baidu Encyclopedia - Homesick Poems