Shenzhen, Nanjing, Tianjin, Xi, Shenyang, Wuxi, Kunming, Haikou, Shanghai, Beijing and other places. According to the inquiry of official website of Yumumu Group, Yumumu is a company specializing in jewelry sales. As of May 6, 2023, it has stores in Shenzhen, Nanjing, Tianjin, Xi 'an, Shenyang, Wuxi, Kunming, Haikou, Shanghai and Beijing. Mikimoto is the founder of Mikimoto Jewelry in Mikimoto, Mr. Mikimoto Yusi. The artificial pearl cultivation method created by him has been passed down from generation to generation.