Street view is reflected on the window of an Apple store which has resumed operation in Burlingame city in north California, the United States, April 11, 2021. Governor of U.S. state California Gavin Newsom recently said the state is ready to fully reopen its economy by June 15 if vaccine and hospitalization numbers remain stable. (Photos: Xinhua)

People have a meal at a commercial area in Burlingame city in north California, the United States, April 11, 2021. Governor of U.S. state California Gavin Newsom recently said the state is ready to fully reopen its economy by June 15 if vaccine and hospitalization numbers remain stable.

A woman traverses the railway track in Burlingame city in north California, the United States, April 11, 2021. Governor of U.S. state California Gavin Newsom recently said the state is ready to fully reopen its economy by June 15 if vaccine and hospitalization numbers remain stable.

People visit a commercial area in Burlingame city in north California, the United States, April 11, 2021. Governor of U.S. state California Gavin Newsom recently said the state is ready to fully reopen its economy by June 15 if vaccine and hospitalization numbers remain stable.

A waitress serves the customers at a restaurant in Burlingame city in north California, the United States, April 11, 2021. Governor of U.S. state California Gavin Newsom recently said the state is ready to fully reopen its economy by June 15 if vaccine and hospitalization numbers remain stable.