What does rock solid mean?

May the friendship and unity among all ethnic groups in our country be as solid as a rock and last forever! Now let’s talk about what does rock solid mean?

1. Pinyin: jiān rú pán shí.

2. Meaning: as solid as a big stone. The description cannot be shaken. Rock: big rock.

3. Source: "New Odes of Yutai·An Ancient Poetry Written by Jiao Zhongqing": "You are like a rock; I am like a pampas grass. The pampas grass is like silk; the rock has no transference."

4. Example: The friendship between the two of us~.

The above is an introduction to what rock solid means.