"Huangshan" is one of the most famous mountains in China, and Tiandu is one of the three major peaks of Huangshan. There is a legend that the Yellow Emperor became immortal here. Huangshan represents the beauty of nature, so the packaging utilizes a Chinese zither, which is replicated using electronic chips and printed strings to let everyone play their own sounds. The story of Boya and Zhong Ziqi making friends due to the song "Gao Shan Liu Shui" is popular, so the zither is regarded as a symbol of friendship. The packaging sides features the Four Wonders of Mount Huang – its pines, stones, clouds, and springs.