The data of KIT-M36 at 48 months old (in Wave 2) has been released. Datasets, instruments, and documentation are available at the Survey Research Data Archive, Academia Sinica, at https://srda.sinica.edu.tw/search/metadata/detail/D00187. For the complete list of KIT data, please visit https://srda.sinica.edu.tw/plan/?idx=SRDA.AS032.