deep pool; deep; profound

abyss; deep chasm

Liu Yuan (c. 251–310), warlord at the end of the Western Jin dynasty 西晉|西晋[Xi1 Jin4], founder of Cheng Han of the Sixteen Kingdoms 成漢|成汉[Cheng2 Han4] (304–347)

honest and far-seeing

distance between two poles; poles apart

Obuchi (Japanese surname)

abyss

Li Yuan, personal name of first Tang emperor Gaozu 唐高祖[Tang2 Gao1 zu3] (566-635), reigned 618-626

vast and profound

deep and still; sound of a drum

clear, deep water

Yan Yuan (521-481 BC), disciple of Confucius 孔夫子[Kong3 fu1 zi3], also known as 顏回|颜回[Yan2 Hui2]

nasosinusitis

no less than from heaven to the abyss (idiom); differing widely; worlds apart; the gap couldn't be bigger

(lit.) as if on the brink of a deep abyss (idiom); (fig.) extremely cautious