To express one's ambition with things is to express one's ambition and will through the description and narration of things.
Lyricism through scenery, also known as feelings in scenery, means that the author describes the objective scenery with strong subjective feelings, puts his feelings and thoughts to be expressed in this scenery, and expresses them by describing this scenery and this thing. This lyric way is called borrowing scenery or borrowing things to express feelings.