China’s scaling back of its zero-Covid regime has left its population reeling. Some are embracing their new freedoms, while others are struggling to overcome their fears of being infected after three years of tough restrictions. Frustration at protracted lockdowns and mass testing boiled over in late November into widespread protests, the biggest show of public discontent in decades. The government did not officially acknowledge the protests, but in the strongest sign so far that it is rolling back its long-running zero-Covid policy, the national health commission updated its restrictions on Wednesday, allowing infected people with mild symptoms to quarantine at…