This study aims to report how Hong Kong teachers handle a seemingly conventional, orderly schooling phenomenon--the teaching of the newly arrived children (NAC) migrated from mainland China. Semi-structured interviews with ten teachers from nine primary schools were conducted. The principal findings are that the teachers are not prepared for the challenges of teaching NAC, that the traditional approaches adopted by many teachers are ineffective, that subtle transformation of the pupil population due to the everlasting influx of NAC has yet to be appreciated by the teachers, and that teachers' logic--their worldview, mindset and conceptualisation of forces at work in Hong Kong schooling--remains unchanged. This paper highlights the various issues of monoculturalisation. Implications are discussed.