Yes and no. China in this timeline mirrors OTL India. In OTL, the Mughal Empire ruled most of Northern India throughout its history-- but its reign over the Deccan was contested, being home to the Deccan Sultanates before Aurangzeb and to the Maratha Confederacy afterwards. Likewise, in this timeline, the Mughal Empire rules Northern China (including the Yellow and Huai River systems), but the Yangtze River area is contested between them and other states to its south (with the most powerful based in OTL Guangzhou/Canton).