Is it an idiom to cover the sun? Explanation of shading the sun

1, covering the sun, is an idiom in China, and the pinyin is zhē tiān bì rì.

2. It means to cover the sky and describe things that are huge, numerous or magnificent.

3. From the eighty-third chapter of "The Water Margin" by Nai 'an, Shi Ming: "Looking from a distance, I saw Liao soldiers coming from the ground, and the dark holes covered the sky, all of which were soap carved flags." It can be found in Modern Chinese Dictionary.