High transaction costs in the rural land market in Nanhai, China are a problem. The government needs to improve transaction rules to make the market fairer and more transparent. By studying the impact of transaction rules on enterprise costs, researchers found that having more collective leaders increases transaction costs for businesses. Additionally, if transaction rules are not open or fair, it leads to high costs for businesses due to lack of information and unfair transactions. To improve market efficiency, transaction rules should be more open, fair, and just.