[Guangyun]: Bitter and cold, the upper stage is 25 cold, kān, and the mountain is Kaiping cold current.
[Ping]: There are fourteen cold in the upper part and fifteen cold in the lower part.
This shows that the reading of characters in Tang Dynasty was flat. It was not until the end of the Song Dynasty that the falling sound method appeared. In Tang poetry and Song poetry, most of them are flat tones. In modern Chinese, pronunciation is still a polyphonic word, even and flat, but the meaning of the word is different.
The white clouds merged behind, and the blue mist melted into the mountains and disappeared.
Looking back at the eagle wilderness, thousands of twilight clouds spread to the horizon.
You see, Chibi has finally passed. Why do you have a child like Zhong?
Looking at Lushan Mountain from the front and side of peaks and valleys, from far, near, high and low places, Lushan Mountain presents various faces.
These examples you cited are all flat. But this word means how you snore today. In fact, judging from the basic sentence patterns, Kanzi is also flat in other sentences.