买卖 (mǎi mai): mua và bán

In this market, buying and selling is very fair; customers don't need to worry about being cheated.

They buy and sell used cars online, which saves a lot of time.

To do business, one must be honest to win customers' trust.

Both parties were satisfied with this deal and signed the contract quickly.

During the Spring Festival, business in the shops is booming, with people coming and going.