”Zero Waste” is becoming the new guiding principle of UN 21 Agenda (sustainable development). Master Cheng Yen, the founder of Tzu Chi Merits Society, first called for environment protection by sorting trash, and collecting recyclables in 1990. She hopes each of us to minimizing our avarice and waste, to preserve a decent environment for our next generation. So far, there are over 44,000 registered environmental protection volunteers around Taiwan. They have collected and sold recyclable materials, ”turn trash into gold” to support and pursuit a zero waste society and a disaster-free world.