Heritage Language (HL) has been used as an umbrella definition to cover different facets of non-official/dominant languages (i.e., non-English in North America) within communities. Overall heritage language proficiency is highly related to literacy and general cognitive development. In America’s Deep South statest like Alabama, the three largest heritage languages are Spanish, Chinese, and Gujarati. Despite some parental investment and little governmental support in HL programs and schooling, most K-16 heritage language learners have a disparity between oracy, literacy, and overall HL proficiency. To remedy this discrepancy, we explore how generative AI provides Chinese Heritage Language (CHL) learners with tailored real-time feedback and observe how their literacy level changes with different social entities. By examining the influences of social-cultural factors on HL learners, we aspire to augment our comprehension regarding the efficacy of pedagogical modalities in equipping them to acquire advanced literacy. Surveys will be administered to evaluate participants’ familial, educational, and communal backgrounds, level of proficiency in HL, and attitudes toward AI models. ChatGPT3.5-4o will generate reading materials, with Prompt Engineering Techniques (PET) and Prompt-engineered Leading Protocols (PLP) designed for CHL learners at the beginning, intermediate, and advanced levels. To investigate the motivations to use AI and its impact on language learning, this study invites participants to engage in a six-month HL study by following pre-trained prompts and interacting with ChatGPT with the intensity, frequency, and duration specified by the learning protocol. Students’ and parents’ reports, periodic progress assessments, AI usage reports, and electrophysiological measurement (EEG) will be collected at the study’s initial, middle, and end times. This project will hold significant implications for AI tools’ role in bridging resource gaps in literacy and cognitive development in underserved communities.