Tech ethnographer Tricia Wang was studying digital communities in Wuhan when COVID-19 appeared. As the city went into lockdown, she noticed the rise of xiao qu (小区), or hyper-local networks of building residents connected through WeChat. Their perseverance inspired her to co-found Last Mile, a New York-based mutual aid organization that has sourced tens of thousands of items of PPE for front-line healthcare workers. Wang joins us to discuss what hers and other mutual aid groups can teach cities about digital governance in the post-pandemic era.