Methods: Two trained SC ambassadors (student helpers) and one supervisor (experienced research assistant) will be deployed for each session of intervention at a SH. Potential subjects will be approached using the "a-foot-into-the-door" method in which SC ambassador will ask if smoker would like to reduce/quit smoking and receive SC intervention or advices. Smokers will be assessed for eligibility and informed written consent will be sought. Subjects will complete a brief self-administered questionnaire (baseline) using tablet. To reduce later hang-ups of telephone interventions or surveys, SC ambassador will save contact number of the trial into subjects' mobile phones.