[To Parent Directory] 9/29/2023 11:49 AM 2140 1_Q.GIF 9/29/2023 11:49 AM 1791 4_Q.GIF 9/29/2023 11:49 AM 12884 Introduction and Basic Concept.xlsx 9/29/2023 11:49 AM 1770 Introduction and Basic Concept.xml