"COVID-19 Brief Advice and Chat-based Support for Smoking Cessation Via Quit to Win Contest 2020"

Participants will receive three months of chat-based support through IM apps (e.g. WhatsApp, WeChat). The regular messages and instant messaging on psychosocial support aim to provide hygienic advice to reduce the risk of exposure to SARS-cov2, increase self-efficacy and confidence, and social support and behavioral capacity of quitting.

Ask about smoking history, Warn about the risks associated with the COVID-19 and smoking (with a COVID-related health warning leaflet), Advise to quit as soon as possible during the COVID-19 pandemic, Refer smokers to SC services (with a referral card, see below for information), and Do it again: to repeat the intervention

Ask about smoking history, Warn about the high risk of smoking, Advise to quit as soon as possible, Refer to the smoking cessation services, and Do it again (if the smokers refused to set quit date).

The 2-sided color printed A4 leaflet, which covers the risk of COVID-19 and smoking and the most important messages to motivate smoking cessation

The 2-sided color printed A4 leaflet, which systematically covers the most important messages to motivate smoking cessation.

Participants will receive regular SMS with similar frequency to Intervention group but with generic information on smoking cessation.

"The 3-folded Smoking Cessation Services card consists of brief information and highlights of existing smoking cessation services, contact methods, motivation information and strong supporting messages or slogans."

A general smoking cessation self-help booklet