Explanation

Ah Zhuang's mother was an outsider, a keeper of the secret recipe for making cured pig's head. The product of her craft was a golden, glossy delight, each piece of meat exuding an irresistible aroma. Unlike the village folks whose cured meats often ended up spoiled or infested with maggots, her creation was flawless. 

However, the villagers, skilled in the art of curing meats themselves, saw no reason to purchase hers. Attempts to sell the product in town or the city were futile due to its unappealing appearance. In the end, they could only watch as Ah Zhuang's family reaped the extra income.

The new rule in the factory, which seemed to rob Ah Zhuang's family of a substantial income, brought a sense of satisfaction to many.