This dataset contains semi-structural interviews designed to support the screening and assessment of major depressive disorder in China. These interviews were collected as part of a larger effort to create automatic AI tools that interview people and identify visual, acoustic, and textual indicators of MDD. Audio-visual recordings of interviews, extensive questionnaire responses are collected and have been transcribed and annotated for a variety of visual, acoustic, and textual features. The package includes 78 folders for each subject.