In Chapter Nine of The Good Earth, Wang Lung cries recklessly, "Oh, you are too wicked, you Old Man in Heaven!" Talk about this in relation to other religious elements in the book so far.
His relationship to the gods is very capricious and interactive. Rather than seeing the gods as being far, far removed from ordinary life, he sees them as being constantly around them. This is why he seems to rail at them sometimes, and then appease them at others. We can see this in the above quote. This is when he goes to the tmeple to spit on the tatues of the gods and to yell at God for causing troubles and heartaches for mankind. As he gets older this becomes a recurring theme for him. However, conversely, when his grandson is about to be born, he lights incense to the gods in the temple.