Gěi yuǎnfāng de qīzi xiěxìn, tā zìrán xiǎngqǐ " Bāshānyèyǔzhǎngqiūchí ".
Writing to his faraway wife, he naturally thought of 'night rain on Ba Mountain swells the autumn pond.'
Tips
history
From 《夜雨寄北》 by 李商隐 (Li Shangyin, late Tang): 君问归期未有期，巴山夜雨涨秋池。何当共剪西窗烛，却话巴山夜雨时. A letter to his wife (or a friend) up north - the rain in the present becomes an anticipated memory to share later.
usage
巴山 = the mountains of Ba, today's eastern Sichuan / Chongqing region - the 巴 ancient state. Still used as a literary name for that region.
