1. If there is a threesome, there must be a teacher. -Tang dynasty: Han Yu's "Shi Shuo". Vernacular interpretation: several people go together, and there must be someone who can be my teacher.

2. and yet, while China holds our friendship, and heaven remains our neighbourhood. -Tang Dynasty: farewell to vice-prefect du setting out for his official post in shu by Wang Bo. Vernacular interpretation: As long as there is your confidant in the world, even if you are far away, you are close to your neighbor.

3. Make friends with literature, and become neighbors with virtue. -Tang Dynasty: Zu Yong's "Qingming Banquet Si Xun Liu Langzhong's Separation". Vernacular interpretation: I often gather friends with articles and knowledge. If I have morality, I won't be alone, and I will have someone to be my neighbor.

4. we are both unhappy -- to the sky's end, we meet. We understand. What does acquaintance matter?. -Tang Dynasty: Bai Juyi's Vernacular Interpretation of Pipa Xing: We are both sad people who have fallen to the end of the world; When we meet today, why ask if we have ever met?

5. A friend who paints must seek lightness, while a mountain-like paper does not like flatness. -Qing Dynasty: Vernacular interpretation of Weng Zhao's "Looking for Mountains with Friends": Friendship, like painting, should be plain; The article Xiangshan stone can't be too flat.