What idioms are there about "thorns"?

Pinyin: jρng jízàI tú?

Commentary: The road is full of thorns. Metaphor environment is hard and there are many obstacles.

Source: "Zuo Zhuan Xiang Gong Fourteen Years": "The ancestors smashed thorns and thorns, and they have been my first monarch since then." Confucius' Ying Da Shu: "There is no way to go, and it is ridiculous to say that it is extremely poor."

2. There are many thorns

Pinyin:? impenetrable defence

Explanation: thorn: Vitex negundo; Cluster: piling up. Vitex negundo grows in groups. Metaphor is that there are great obstacles and many difficulties on the way forward.

Source: Chu Qingren won the romance of Sui and Tang Dynasties.

3, covered in thorns

Pinyin: j ONG jímγn fγ

Explanation: Metaphor is full of bad thoughts.

Source: Choosing Friends

4. Move the thorn

Pinyin:? J ǔ don Jenny?

Commentary: Every move is like being in a thorn forest, which means that you can't be casual and everything is threatened.

Origin: The Romance of the Three Kingdoms, the tenth time, Luo Guanzhong, Marten and the royal family of the Ming Dynasty avenged their father and Cao Cao.

5, copper camel thorn

Pinyin: tong tuj and ng jí

Description: bronze camel: a camel made of copper, which was placed outside the palace gate in ancient times. Describe the broken scene after the fall of the country.

Source: Biography of Suo Jing in the Book of Jin: "Jing had foresight to know that the world would be in chaos, pointing to the bronze camel at Luoyang Palace Gate, and sighing:' Thorns meet you in the middle ear?' "