Group 1 - The event "City Walk" gathered over 40 representatives from 10 cities in the Yangtze River Delta to discuss the vitality of building economies and the integration of the region [1] - The initiative aims to implement the national strategy for the integrated development of the Yangtze River Delta and promote high-quality development of building economies [1] - A "Seven Ones" brand project was proposed to establish a mechanism for building economy brand creation, with building interaction experience activities being a key component [1] Group 2 - Hangzhou, as a historical and cultural city, plays a crucial role in the transformation of urban and economic development through its building construction and development [1] - The deputy district head of Shangcheng District expressed the hope to enhance regional cooperation and explore new paths for urban renewal, cultural heritage, and tourism integration [2] - Representatives visited various sites, including the Qianjiang New City Central Business District and the "Billion Avenue" Fuchun Road, to appreciate the skyline and engage in discussions on building economy brand development [2]