What does the man give the woman in Weichang County, Chengde, and what does the woman give the man?

Engagement is commonly known as "changing things" in Chengde, which means that the man's family prepares bride price money, clothes money, a few gold (depending on the requirements of the woman's family) and four boxes of bride price. "Changing things" means that the man actually gives something to the woman, and the woman casually exchanges something with her parents' wishes, and both parents also prepare red envelopes such as change fees.