A, the explanation is as follows

Original text: Mr. Tinglin has never let go of his books since he was a child, and he always packs books with a mule when he goes out.

When encountering a frontier fortress Pavilion barrier, call

Go to the wine bar beside the road, sit across from each other and drink heavily. Ask about its customs and examine its area. If it is inconsistent with what you have heard in your life, send a letter to make it clear and correct, and there will be no doubts. If nothing happens immediately, just follow the notes on Anmo's Sutras. If you meet an old friend who you don't know, or you may have fallen off a cliff. , and have no regrets. If you work hard to this point, you should achieve great things and don't compete with them.

Translation:

Mr. (zi Tinglin) has never put down his books since he was a child (describing a love of reading and diligent study). He always takes one or two thin horses with him when he goes out. Carrying a book and following me. Sometimes when I arrive at a frontier fortress (barriers, cities, pavilions, and firehouses are all military buildings used for garrison defense in ancient times, such as fortresses and frontier fortress posts), I look for them

on the roadside. Let's have a drink together in a small hotel. Ask about the local culture and geography. If he finds that it is inconsistent with what he has learned in the past, he will read the book and correct it in detail, and he must not stop until there is no doubt. When I had free time while sitting on my horse, I would sit on my horse and silently recite

other classics and their commentaries. (The explanation of the classics is called "notes" or "shu". ) Even when he meets relatives and friends, he doesn't say hello (he is too engrossed in chanting the classics silently and doesn't notice other things). Sometimes he falls into the valley because of this (too attentive to Zui Anmo), but he doesn't regret it. To this level of seriousness, his His knowledge is profound and profound, no one can compare with him!

Center: This passage mainly expresses the characteristics of

diligence, rigor and concentration, and also writes about

reading and investigation.