negative layer. Upon inquiry, Kunshan over the rainbow Shopping Center found that pet products are located on the first floor of over the rainbow Shopping Center, which is not very big, but there are many pet-specific products. Kunshan, a county-level city under the jurisdiction of Jiangsu Province, is managed by Suzhou City, and it has been more than 2,2 years since the county was established in the Qin Dynasty. Kunshan is the birthplace of Kunqu Opera, the "ancestor of hundreds of operas".