Complex sentence refers to a sentence composed of two or more clauses whose meanings are related and do not contain each other in structure.
According to the above definition, which of the following is not a complex sentence?
The setting sun generously sprinkled its last afterglow on the silent yard. Yang Yang pushed his father's wheelchair and walked slowly on the deciduous country road; His father was intoxicated in the local atmosphere and radiated the hot light of his life. Yang Yang felt that some last day was coming.