What are the poems that express "true friendship is not rhetoric, but holding your hand at a critical moment"?

Although the mountain road is far away, I will not refuse your kind invitation; Even if the snow is thick, visit the snow. It's spring and the ice has melted. -Zhang Jiuling's answer to Lu Li

Although the mountain road is rugged and long, I won't refuse your kind invitation; Even if it snows heavily, you should visit through the snow, not to mention that it is spring and the ice and snow have melted.

Looking at autumn grass in front of the flower gate now, how can you watch each other grow old and poor? -Cen Can's "Liangzhou Pavilion and Judge Night Collection"

Seeing autumn grass in front of China, how can we watch each other grow old in poverty?

Friends, if my friends in Luoyang invite me; Just say I'm still Bing Xin Okho, and stick to my faith! -Wang Changling "Breaking up with Xin Jian at Furong Inn"

Friends, if relatives and friends in Luoyang ask about me; Just say I'm still Bing Xin and stick to my beliefs!

We were all unhappy until the end of the day, when we met. We understand. What is the relationship between acquaintances? ! -Bai Juyi's Pipa Trip/Introduction to Pipa

Translation: we are all poor people who have fallen to the end of the world; When we meet today, why should we ask if you have met before?

A gentleman is poor, who wants to meet today without paying for drinks? -Gao Shi's "Two Poems of Biedong University"

Don't worry about having no friends ahead. Who doesn't know you in the world?

Even if the Peach Blossom Pond is deep, it is not as deep as Wang Lun's sending away my love. -Li Bai's "To Wang Lun"

Look at Taohuatan. Even though there is a gap between thousands of feet and China, how can I thank Wang Lun?

There is no better gift in Jiangnan, and flowers will send spring. -Lu Kai's Poems for Ye Fan

There is no better gift in Jiangnan. Just send a plum blossom to herald spring.

Respect the old friend, miss me, and care most. -Zhou Bangyan's "Qi Liao's resentment, getting on the horse and helping the disabled drunk"

If my old friend in front of the bottle is still alive, he will definitely miss me. He is the most caring and emotional.

However, you see, the ancient Guan Zhong, the rich and poor gentleman's Bao Shuya, was abandoned like dirt. -Du Fu Poor Bank of Communications

But you see, Guan Zhong and Bao, ancient friends of the rich and the poor, have been abandoned by people today.

You are the cloud of Songshan, and I am Qin Chuanshu, who has been away from home for a long time; Thousands of miles away, you sent a letter of sympathy. -A letter from Li Shangyin to Secretary Ling Huchong.

You are Song Shanyun, and I am Qin Chuanshu, who has been away from home for a long time; Along the way, you sent a letter of condolence.