In celebration of World Earth Day, Shei-Pa National Park has each year mobilized volunteers, Shei-Pa FB fans, and people in the tribes to hold Xiujian apple ecological activities on grounds near the park since 2013. This year, in the spirit of working vacation, ecotours, and community participation, the park organized volunteers and fans signed up on the web for a trip to Tiangou tribe in Taian Township. The group trim back overgrown branches and grass at the Tiangou ceremony venue, and they planted beautiful spices of Taiwanese apples and Spiraea prunifolia, commonly called bridalwreath, around the venue. This fulfilled the duo purpose of national parks getting involved with their surrounding communities and helping aboriginal communities develop and promote ecological preservation. That morning, participants did the volunteer work, and they took the ecotour that afternoon. They got to know more about traditional Atayal culture when they followed the aboriginal explainers, who were trained by the park, to see the natural scenery of Tiangou tribe and meet Ms Ke Ju-lan, who is a national treasure as the only living person with a tattooed face in the back mountains. Then they went into a workshop to use bamboo as fuel to cook bamboo shoot from Phyllostachys makinoi. They went on to taste this highly crispy and tasty delicacy, or A-Li as the locals fondly calls these shoots, that had been obtained from the plant grown at 800-meter elevation without fertilizers and without pollution. The experience was best absorbed by the five senses.