Reason: The original sentence is both a figurative sentence and a subject-predicate sentence. The "footstep" in the original sentence is both the "ontology" and the "subject" of the sentence; Xiang is a figurative word, Xiao Ling is a vehicle and Xiang Xiaoling is the predicate of a sentence. In addition, the essence of abbreviation is to grasp the main meaning of the sentence-that is, to retain the subject, predicate and object of the sentence. Although this sentence has no "object" (subject-predicate sentence), it is still a complete sentence.

For reference only.