Annoyed by mosquito bites often, Katherine had her own collection of essential oil at home for making herself repellent formula, some sprays even suitable for kids as well. She would give them out for gifts. Willing to submit her talent to God, Katherine decided to bring along her stocks with extra ingredients and tools to open classes at a Macau park during STM. The classes attracted many women bringing along their kids to join. It helped the team to build new relationships in the community.