These are just flashpoints. They will soon set an inferno. This keeps Xi up at night. He is between a rock and a hard place.
His options are limited. If he backs down, he will have no justification to hang on to power any longer. Zero-COVID is his signature 'success' and his bragging right. Yielding to the popular demand means humiliation to Xi and challenges his legitimacy.
If he insists on lockdown, he will face a furious 1.3 billion Chinese. That is not for the faint of heart. A June 4th like massacre is in the cards.