This was built upon by his disciple Mencius to argue that if the king was not acting like a king, he would lose the Mandate of Heaven and be overthrown. Therefore, tyrannicide is justified because a tyrant is more a thief than a king (but attempted tyrannicide is not).
Confucius' philosophical school was first continued by his direct disciples and by his grandson Zisi. Mencius and Xun Zi are his two great followers, one on each "side" of his philosophy, perhaps simply described as optimism and pessimism. They built upon and expanded his ethico-political system.
Soon after Confucius' death, Qufu, his hometown, became a place of devotion and remembrance. It is still a major destination for cultural tourism, and many Chinese people visit his grave and the surrounding temples. In China, there are many temples where one can find representations of Buddha, Lao Zi and Confucius together. There are also many temples dedicated to him which have been used for Confucianist ceremonies.