A few weeks after the first reported case of the new coronavirus, called later COVID-19, in China, end of December 2019, tremendous and radical changes in daily life in china as well as in the entire planet have been observed gradually. China started to close cities like Wuhan, the center of epidemic, restrict travelling, shutdown most of industrial activities starting mid-January 2020. These unprecedented measures were taken to contain the virus and stop its spread to the whole country. The World Organization of Health (WHO) had declared COVID-19 a global pandemic on March 11, 2020. The number of affected countries and deaths have continued to climb exponentially, and a state of emergency was announced in most of the countries. Usually crowded, most of the very known and populated cities and capitals such as Paris, Milan, Berlin, Barcelona, Madrid, London, New York, were seen deserted.