Sharing at UK church -- Introduction of OIA

It's really amazing to share what I've learnt from CGST with brother & sisters at a UK church. I used to share these things by Cantonese but never in English. I can feel that now I have more confidence to speak in front of the local (compare with a few months ago). I'd say I really enjoy the preparation process of the below PPT and I hope I can share more in the future, so that I won't waste what I was taught in the past years..