What troubles does his uncle bring to Wang Lung?

Wang Lung's uncle is a lazy, sly, old man who is a burden and a constant source of trouble to Wang Lung. Unlike Wang Lung, he is not a hard-working farmer, always gambling away whatever money he has. He joins a group of dangerous bandits during the famine, and comes back to use that to threaten Wang Lung. He and his wife live off Wang Lung's wealth, and later die of age and excessive opium use.