"This Report is submitted by the Chinese Language Research Team, CRPP, National Institute of Education, Nanyang Technological University. The Report provides the main results of a special focused project of CRPP, entitled "An Investigation of Singaporean Chinese Children's Oral Linguistic Competence in Mandarin: A Corpus-Driven Study". For this project, there are two main research objectives. One is to generate an oral Mandarin word list of Singaporean Chinese children for the CL curriculum developers and CL teachers. The other is to find out whether there are marked differences between children who claimed to speak English predominantly at home and those who claimed to speak Mandarin predominantly at home in terms of their oral lexical coverage and oral fluency of Mandarin before they start to learn Mandarin in primary schools."-- [p. 1] of executive summary.