What is the relationship between China's traditional contract culture and the contract spirit of contemporary China society ruled by law?

In fact, in our traditional legal culture, there has always been the spirit of abiding by contracts, which is also the natural requirement of Confucian honest legal culture. "Make friends and don't believe", "People who don't believe don't know what they can do." The legal culture of Confucian honesty even raised honesty to a general code of conduct. Therefore, there has always been a saying among the people that "a word spoken by a gentleman is hard to recall" and "a word spoken is hard to recall", which actually constitutes the cultural basis for strictly observing the spirit of contract. Therefore, in China, the concept of abiding by contracts has existed among the people for a long time, and even penetrated into the blood of China culture.