What is the weather like in China from late Feb through mid Mar?

Hi, where do you want to visit? If you go to Beijing, then it is still very cold in Beijing in Feb and Mar. And the average temperature in Feb is -1C and 6C in Mar, so I advise you bring warm clothes with you. For more information about the weather in China, you may check the following page for your reference: https://www.travelchinaguide.com/climate/