Tang Bai Juyi
A sunset gradually sank into the river, half green and half green.
The loveliest thing is the ninth day of September. The bright pearl's bright crescent moon is shaped like a bow.
The reflection of the sunset on the river sparkles in the sunlight, half of which is dark blue and the other half is red. What makes people fondle admiringly is the first moonlit night when the cool dew falls in September. Dewdrops are like real beads, and crescent moons are like delicate bows.
Ode to the Twilight River is not always about the scenery of the Twilight River. If we only look at the title of Ode to Mujiang, it seems that this poem should be sung until the twilight river scene around sunset, but the words "night" in the poem, "poor night in September" and "dewdrops as real as pearls as bows" are obviously writing about "night".
According to the explanation in Ci Hai: "Dew is water droplets that condense on the surface of the ground or ground objects because of the heat emitted by water vapor in the air, which makes the surface temperature of the ground or ground objects lower than the air temperature (but still higher than 0℃). It is more common in sunny and windless nights or early morning. " It can be seen that the title and content of this poem are not consistent, and it is not always written about twilight river scenery.
When understanding this poem, we must grasp this feature, and we can't just understand the content mechanically from the title. Some people think that the title of this poem is not completely consistent with the time in content, which is the author's negligence or pen mistake.
In fact, this situation is very common in Tang poetry. For example, Du Fu's "Sunset" has been written from dusk to "grass dew drops autumn roots"; Jia Dao's Twilight in the Mountain Village was also written from sunset to bright moon. Therefore, we can't completely study literary works with the research methods of natural science.