It's hard to reach the sky
It's difficult to go up to the sky. It's a Chinese word. Its original meaning is to describe something that is extremely difficult to succeed. It's very difficult to achieve. It's more difficult to compare it with going up to the sky.
Li Bai said: "there is a high standard of six dragons returning to the sun on the top, and there is a shockwave reverse turning back to Sichuan on the bottom. The yellow crane can't fly, but the ape and the oyster are anxious to climb. Where is the green clay plate? Nine steps and nine turns linger on the rocks. He looked up at the well and sighed with his hands "The difficulty of the Shu Road is that it's hard to reach the sky. Look to the West and see changjiehe!"
explain
It's very difficult to climb the mountain roads in Sichuan. It's more difficult than heaven to take such a road. [extended semantics] refers to the difficulty of completing some things and problems.
source
In Li Bai's the difficulty of Shu Road in Tang Dynasty: "the difficulty of Shu Road is difficult to reach the sky!"
example
The difficult situation is more difficult than the "to" Sichuan Road. My life by Feng Yuxiang chapter 35
It's hard to reach the sky
The sensitivity of burning Osmunda - rán qí zhī mǐn
Save the time and improve the customs - jiù shí lì sú
form a connecting link between the preceding and the following - chéng shàng qǐ xià
strong soldiers and sturdy horses - bīng qiáng mǎ zhuàng