No need. As of January 10, 2023, from Singapore via Hong Kong, China back to Shenzhen in Hong Kong, China does not need quarantine, January 8, 2023 onwards, from Hong Kong to the mainland do not need to quarantine, and do not need to apply for a health code. Singapore **** and the country, referred to as Singapore, the old name of Singapore Jia Po, Xingzhou or Sing Tao, also known as the Lion City, is an island country in Southeast Asia.