“…To deal with the critical situation of the COVID-19 outbreak in China, a series of quarantines, isolation, and travel restrictions in municipal areas, provincial areas, and nationwide have been placed by Chinese authorities, while the outcomes of these interventions have been examined in [3][4][5] . On the other hand, there are a great number of studies [6][7][8][9][10][11][12][13] that have demonstrated feasibility to leverage mobile applications and search engines, such as Baidu Migration 1 and Baidu COVID-19 Page 2 , to acquire the real-time information on pandemics, including trends of human mobility, confirmed cases, and death tolls for Chinese cities.…”