Answer
The Qing empire began to decline in Qianlong's late years due to corruption and wastefulness in his court. Corruption was widespread among the Qing officials, who embezzled funds from the government and abused their power. This led to a decline in the state's finances and a decrease in the quality of its services. Wastefulness was also a problem, as the Qing court spent lavishly on banquets, ceremonies, and other events.