Under the trees into the valley
It is an idiom, which refers to abandoning the light from the dark, or from a good situation to a bad situation. It comes from Mencius Teng Wengong.
From the high tree down, into the deep pit valley.
Source of "Mencius Teng Wen Gong Shang": "I heard that it came from the valley, and moved to the arbor, but I didn't hear that it came from the arbor and entered the valley."
Chinese PinYin : xià qiáo mù rù yōu gǔ
Under the trees into the valley
a pleasant day coupled with a fine landscape. liáng chén mèi jǐng
one 's mind is burning with grief. chóu cháng jiǔ zhuǎn