Complex sentence: Her research draws on non-traditional sources to capture the experiences of ordinary people, and explains how new sources buried in the ground, whether intentionally or unintentionally, supplement the detailed official record of China's past.
Split into simpler sentences: Her research draws on nontraditional sources to capture the experiences of ordinary people. In particular she is interested in how sources buried in the ground, whether intentionally or unintentionally, supplement the detailed official record of China's past.