What's the point of bidding farewell to Cambridge ostentation and extravagance?

"The green grass on the soft mud and the oily water are swaying again."

The word "ostentatious" is written in the middle.

This is the third time that the poet came to England. When he left, he came to Cambridge to say goodbye to his friends. So at this time, people are eager to see his friends. At the same time, the poet misses seeing the beautiful scenery along the He Kang River.

Therefore, the "showing off" here uses personification, which is unique and shows the poet's extremely infatuated feelings.