Since it's almost the time of Spring (Lunar New Year), many people would conduct spring cleaning at their homes. Sometimes, we will throw away old things which we do not have use of anymore. More often, throwing things away not only happening during Spring Cleaning, but also every day. However, we are not aware enough to see this happening. For example, when things break, most of the time we would immediately think of throwing the item away, and buy a new one. This happens ve