First of all, you need to meet Reggie, who is at the gate of the snowy city (according to the report of Imperial soldiers to Quentin, the storm cloak has reached the gate, so you can't travel fast when you leave Xiao Long Palace).

Out of the city gate, cigarettes are already being sold outside. According to the prompt, I ran to Reggie's place, and she would say a slogan herself until the slogan finished (because it was not the picture that stopped talking to her, which made it look like another bug, but it wasn't. Patiently listen to her finish)

Next, the cloak against the storm. After killing all enemies, turn around. Lord Bagoff is making a declaration of victory. After listening to him, meeting him will trigger a dialogue. This task is really completed (uesp said that listening to the Lord's speech is optional, but after I killed the enemy, the fighting music didn't end, and it was good to listen to him. I'd better talk to him by the way).

Then go to the lonely city to find Tullius, and finally you will meet Quentin;

Then Governor Quentin's problem was solved.