Go out with a thin horse or two. Sometimes when we arrive at the frontier fortress pavilion (pavilions, cities, pavilions and pavilions are all military buildings guarded by ancient troops), we will find veterans to have a drink in a roadside pub and ask about the local customs and geography. If you find that it doesn't conform to what you know before, he will finish reading the book and make detailed revisions. You must stop without doubt. Sitting on a horse in your spare time, silently reciting classics such as the Four Books and Five Classics and their notes through the saddle. (The classic interpretation is called "annotation" or "sparseness". Even if he met friends and relatives, he didn't know them (he was too absorbed in classics to notice other things), and sometimes he fell into a trough (he was too addicted to them), and he didn't regret it. To this extent, his knowledge is profound and profound.

centre

This passage mainly shows Gu's diligence, preciseness and concentration.

Single word solution

(1) Mr. Lin Ting never put down his book: Put it down (2) Ask the veteran to have a drink by the roadside: Here.

(3) consulting the local situation: asking.