no.
according to the relevant information, there is no shop selling double-skin milk in Taiyuan Street, Shenyang, and there is no mobile booth selling double-skin milk. If you want to eat, you can go to Changqing Food Street, which is located in Hunnan New District, Shenyang, and there are various snacks for sale, including double-skin milk.
Double-skin milk is a Cantonese-style dessert, which originated from Shunde in the Qing Dynasty and was made of water milk, and spread all over Guangdong, Macau, Hong Kong and other places.