Participants who reside in the Concordia Tsat Sing Kong Transitional Housing Estate (still under construction) will be invited to join the GO wellness program.

Green Oasis wellness program: include physical exercises, gardening, interaction with the developed website. Participants' general health status and website evaluation will be measured at T0 (baseline), T1 (3 months), T2 (9 months), using standardized questionnaires.

Study Design: pre-post study, 50 participants will be recruited from the Concordia Tsat Sing Kong transitional housing estate.

Conducting pre- and post-test of WHOQOL-BREF. The brief, Chinese version of the World Health Organization's quality of life scale (WHOQOL-BREF) has our domains: physical health, psychological health, social relationships, and environment. A 5-point response scale is used in the scale. Higher scores indicate higher quality of life. WHOQOL-BREF has good validity and reliability.

Conducting pre- and post-test of Subjective Happiness Scale (SHS). The Subjective Happiness Scale's Chinese adaptation (SHS) consists of 4 items to measure individual levels of subjective happiness. It features 4 questions, each evaluated on a 7-point Likert scale, where a higher score signifies a higher degree of subjective happiness

Conducting pre- and post-test of Activities of Daily Living Questionnaire (ADLQ). The activities of daily living questionnaire (ADLQ) will be measured by the Barthel Index, which consists of 10 items of ADL, including mobility and self-care ability. It refers to the basic self-care tasks that individuals perform daily to maintain their overall well-being and take care of themselves; the activities include eating, grooming, bathing, and dressing.

Conducting pre- and post-test of the 5-Item Physical Activity Questionnaire. The Chinese adoption of the 5-item physical activity questionnaire will be used to assess the physical activity levels of the participants. This questionnaire uses a 5-point Likert scale to assess five items: frequency, duration, intensity, overall length, and type of activities the participants perform during their spare times. The test-retest reliability of this questionnaire is between 0.61 and 0.91, indicating its usefulness.

Website will be assessed using the Chinese version of the System Usability Scale (SUS). The SUS consists of 10 items rated using a 5-point Likert scale. A higher total score indicates better quality of the rated system. This scale has good reliability, with a Cronbach's alpha of 0.84.