“…This empirical regularity, similar to power laws, has been documented extensively in the social and natural sciences. In particular, Gibrat's law has been shown to explain the growth process of consumption (Battistin et al, 2009 ), firms (Luttmer, 2007 ), farmland (Akhundjanov & Drugova, 2021 ), cities (Eeckhout, 2004 ; Ioannides & Overman, 2003 ), countries (González‐Val & Sanso‐Navarro, 2010 ; Rose, 2006 ), carbon dioxide ( ) emissions (Ahundjanov & Akhundjanov, 2019 ) and bird population (Keitt & Stanley, 1998 ), among others. In this study, we formally test for proportionate random growth at micro‐level by analysing growth rates of COVID‐19 cases in Chinese cities.…”