Architecture China focusses on cutting-edge achitectural designs with regional characteristics in contemporary China. This issue, Winter 2020, Architecture as Infrastructure, selects a series of pioneering architectural cases in China elaborating on how a new kind of architectural infrastructure can be formulated. It includes two essays respectively written by Zhang Bin and Tan Zheng, and the built projects of the 11th Horticultural Exposition of Jiangsu Province. Another series of built projects "Toilet Revolution" is also included. Both the academic writings and architectural practice in this issue reveal the hidden potential of urban infrastructure in the current construction in China.