The Counterattack of the Fat Wife Queen

A modern med student transmigrated into obese Queen Theresa, killed by white lotus Lia. In the cold palace, she used a cross-time device to buy modern goods, lost 50kg, and saved the king with surgery. She crushed Lia, the dowager, and traitorous nobles with tech weapons, exposed conspiracies, then left palace life to travel with the king and find freedom.