Now that the country has been fully liberalized, all places can no longer be closed, so people have resumed their normal lives, but they still need to be well protected to avoid infection when traveling, and they don't need health passwords or nucleic acids when traveling.
Yichun is a prefecture-level city in Heilongjiang Province and an important eco-tourism city in northern China approved by the State Council, with a total area of 32,759 square kilometers.