How did a dynasty lose or gain the Mandate of Heaven?

If the ruling dynasty was wealthy, it would keep the Mandate of Heaven.

If the ruling dynasty was fair, it would keep the Mandate of Heaven.

If the ruling dynasty was held by a non-royal person, it would lose the Mandate of Heaven.

If the ruling dynasty was not spiritual, it would lose the Mandate of Heaven.

Question

How did a dynasty lose or gain the Mandate of Heaven?

 If the ruling dynasty was wealthy, it would keep the Mandate of Heaven.

 If the ruling dynasty was fair, it would keep the Mandate of Heaven.

 If the ruling dynasty was held by a non-royal person, it would lose the Mandate of Heaven.

 If the ruling dynasty was not spiritual, it would lose the Mandate of Heaven.

elite · Answer

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiljaTei9DKAhUW-2MKHbl0BGoQFggdMAA&url=http%3A%2F%2Fwww.learn.columbia.edu%2Fnanxuntu%2Fhtml%2Fstate%2F&usg=AFQjCNGZ-lmjoEdJdqe8akEBEJI-kMQnNQ

wwhitlock · Answer

A ruler needs to be virtuous and fair to keep the Mandate of Heaven. If an emperor is not fair, he loses the mandate and can be replaced.