Now I want to go back to Harbin from Dalian. I don't know if 14 days isolation is needed. Who should I ask exactly?

Now I want to go back to Harbin from Dalian. I don't know if 14 days isolation is needed. Who should I ask exactly? I'm telling you, don't ask anyone. Must be quarantined for 14 days. Be responsible for yourself and the whole society. Because of the epidemic area in Dalian. Dalian must be quarantined 14 days when it returns to Harbin. Be responsible for the people's rights. Mainly responsible for your family.