In various communities in Shandong, you can always see the volunteers of Shandong Zhiwei Environmental Protection Technology Co., Ltd. busy figure. They shuttled through the community's garbage drop-off points, enthusiastically offering help to residents. Volunteer Xiao Zhang will take the initiative to step forward when the residents throw garbage, take the garbage bag carefully, while sorting and patiently explain: "Uncle, this leftover fruit peel belongs to the kitchen waste, should be put in the green bucket, like this plastic bottle is recyclable." In the face of some uncooperative residents, the volunteers were not discouraged, and repeatedly popularized the knowledge of garbage classification in plain words. With their daily efforts, the community residents have become more and more accepting of garbage classification, more standardized when throwing garbage, and the community environment is becoming more and more tidy and orderly, while they are still silently contributing to the cause of environmental protection.