Uncle, you had not read the Analects
Please don't any how spread rumours
Confucious approved indeed required
People to rebel if conditions are right
The Mandate of Heaven, with its emphasis on ren of the ruler, sows a seed for rebellions. If the ideal ruler is to ensure the society’s prosperity through his virtue, adverse conditions such as severe flood, drought, or famine, which have been frequently recurring problems in China, are to be blamed upon the lack of virtue of the ruler. If the natural disasters devastate the country, the ruler has the obligation to amend the situation (offering famine and tax relief and so on). And if he fails to do so, the people consider it within their rights to rebel. The Mandate of Heaven, thus, functions as a kind of social contract. The rulers, not only the emperor but also local lords, are expected to show ren, or their love for the people, to ensure the mythical ideal state of the peaceful and prosperous world. If they fail to do so, the people have, at least theoretically, the right to remove the unworthy ruler.
Mencius, the Second Sage of Confucianism, clearly approved the elimination of unrighteous Zhou Wang (Mencius 1:2:8), a statement in the authoritative text hat made many Chinese emperors nervous. Many rebels in Chinese history did claim that they had the Mandate of Heaven to rebel. Two of Chinese dynasties were founded through this route. Liu Bang, the founder of the Han dynasty, started off as a peasant rebel warrior,* rose to the imperial throne, and ruled as Emperor Gao from 202 to 195 BCE. The founder of the Ming dynasty Zhu Yuanzhang (ruled as Hongwu Emperor 1368-1398) was also a peasant warrior who rose to the throne through his participation in the revolt against the Mongol rule.
http://www.demystifyingconfucianism.info/the-mandate-of-heaven
*