Do Yangjiang personnel need nucleic acid when going to Yangchunchun Bay?

No need. Yangjiang and Yangchun both fall under the jurisdiction of Guangdong. As of December 16, 2022, according to Guangdong's epidemic prevention policy, foreigners do not need to undergo nucleic acid testing when getting off the bus. The substance for nucleic acid detection is the nucleic acid of the virus. Nucleic acid testing is to find whether there are nucleic acids of foreign invading viruses in human respiratory specimens, blood or feces to determine whether they are infected by the new coronavirus.