What bus did the ancients in remote areas take to Beijing to catch the exam?

How long can this ancient man last? Seeing a lot of people answering the carriage, I actually remember that horses are not affordable for ordinary people. People who can own several horses are considered rich. Most scholars ride oxen or ox carts. There is also a poem, I don't remember which is Du Fu's or whose. The main idea is to write where he rode an ox. I remember enjoying a poem at that time, saying that in the Tang and Song Dynasties, literati rode cows, while military men rode horses. At that time, the poet just wanted to ride an ox to the battlefield to reflect the reality of helplessness. Therefore, I think that if you don't ask the Qing Dynasty and other relatively recent ancient times, those ordinary literati and scholars can't ride horses regardless of economy or customs.