According to the announcement issued by Shandong Epidemic Prevention and Control Center, Weishan Island didn't check the health code and negative accounting certificate when he went to Zaozhuang, so there was no need for centralized isolation, so Weishan Island didn't go to Zaozhuang for isolation.
Zaozhuang, a prefecture-level city in Shandong Province, is an important modern coal chemical, energy, building materials and machinery manufacturing base in Shandong Province approved by the State Council.