Zhang Yi died in an accident (his mother died of illness and his father died earlier), so Lu Dong passed through him. The family went from rich to poor, with only 2 acres of fertile land left.
Zhu Xiao is the second young master of a landlord's family, but because of his lack of intelligence, he has only brute strength and no brains. He can only act stupidly like a farm boy working in a farm.