Solution: Tianmen hangs the bill and is scheduled to win the bid; Ma Si is a grassland, and autumn in Luming Literature is very high.

This should be a signed poem. The general meaning is as follows:

On the high heaven door, there is a poster of winning the bid, and the names of high school students are impressive. The sweat of the past was wasted, and finally stood out, ranking among the best and getting ahead. On the grassy Yuan Ye, the steed let go of its hooves and galloped freely, which greatly shook the sky. In the crisp autumn season, the chirping of deer came like bursts of music, cheerful and beautiful, as if to congratulate this success. All this seems to be predetermined and in line with God's will.

It means good luck and everything goes well.