April 2018, C-star International Trade Fair for Solution and Trends opened in Shanghai. As China's most international and professional trade fair for retail industry, c-star specializes in store decoration, store design, retail technology, visual marketing and other exhibition areas, which are in line with the market development trend of China's retail industry. Cityinno have had participated in C-star for 3 years. At the exhibition, we discussed the pain points and opportunities with different visitors about space design, service experience and other aspects together.