Reason for Qianlong's Tone

The point of view of Qianlong towards King George is arrogant and condescending. The reason for this point of view is because Qianlong believes he is the "Son of Heaven", and therefore, believes he is better than King George. There can only be one "Son of Heaven" and that person is Qianlong; as a result, he feels he has the power of God and heaven behind him. He also has been treated by eunuchs all his life in a large palace and thus, feels no need to act nicely towards others. He thinks he is incredibly extravagant and can just give orders.