The province of Zhejiang near Shanghai raised its emergency response to the highest level on Sunday, closing schools and suspending flights and rail services in some cities
The aid worker, Abdulrahman al-Sadhan, was detained by Saudi authorities in March 2018 and reported to be sentenced to 20 years in prison followed by a 20-year travel ban
The missiles reportedly flew 1,500 km (930 miles) before hitting their targets and falling into the country's territorial waters during the tests on Saturday and Sunday