How bright the moonlight is at home! The previous sentence

He knew that the dew tonight would be frost. He knows that the dew will be frost tonight, and the moonlight at home is so bright! It means: Starting from tonight, the moon in my hometown is still the brightest and clearest. This poem is Du Fu's Remembering Brothers on a Moonlit Night. This poem was written by Du Fu in Qin Zhou (now Tianshui, Gansu) in the autumn of 759, the second year of Gan Yuan, Tang Suzong, and four years after the Anshi Rebellion broke out. In July of the second year of Gan Yuan, Du Fu gave up his official position in Huazhou and moved his family to Qin Zhou. Qinzhou City is located in the west of Longshan Mountain, a branch of Liupanshan Mountain, which was a remote border county at that time. In September of the same year, Shi Siming led the troops south from john young, captured Bianzhou and entered Luoyang in the west. Shandong and Henan are at war. Du Fu's younger brothers were scattered in this area at that time, and because of the war, there was no communication, which aroused his strong anxiety and yearning. This poem is a true record of his thoughts and feelings at that time.