Thoughts of old time from a night-mooring under mount niu-zhu's appreciation of the word "empty" in poetry couplets.

From "looking at the moon" in Niuzhu to "nostalgia". When Xie Shang crossed the river by the moon and met Yuan Hongyue, Lang Yin was in a faraway place, which was the most likely to bring forth the association of ancient and modern things. This poetic story was consistent with the place where the poet was in front of him (the Xijiang River in Niuzhu) and the scenery he met (the blue sky and the bright moon). Therefore, although there was a great leap between "hope" and "memory", it felt very natural and reasonable to read. The word "Wang" contains the poet's association from the present to the present and the ideological activities that are not directly expounded. The word "empty" of "empty memory" is quoted below.