Aim to establish a large-sample database of "Multiple-MRI/Gene/Cognition" for healthy Chinese (sample number, 5000; age, 6-70 years). This is a fundamental but very necessary work for future researches such as development, aging, relation of gene and behavior, relation of gene and neuroimaging, relation of behavior and neuroimaging. Importantly, this work will provide a norm for researches on psychological or neurological patients. This large-sample will be shared with world-wide researchers.