[Answer] First, with the shape of the seal: the book is the heart, and it is a few chapters for Li Zhi. Second, the seal: Yang Mingjun seal, name seal, calligraphy author.
[Information] Yang Mingjuan only knows that he is from Jinghai County, Tianjin. The specific information about the author of this calligraphy is unknown.
[Supplement] The difference between "Jun" and "Zhan" in seal script;
"Jun"
"exhibition"