This qualifier, "initial", makes me think you are arguing that their subsequent actions are excusable. I'd argue they aren't excusable, even from a completely amoral utilitarian perspective - because nothing they've done even looks rational. Accusing the other party in trade negotiations of releasing a biological weapon, coincidentally right next to your own infectious disease facility, isn't going to improve negotiation prospects - no rational person would think that it could. Threatening to interrupt medical supply chains during a pandemic... I can't think of a better battlecry for those who'd advocate pulling all operations out of China. Forcing workers to return to the factories and claiming that you are back at 85% capacity, when everyone has access to near real time satellite imagery proving that your coal plants aren't running, isn't going to strengthen your negotiation position.