To introduce others, we should introduce the younger generation to the elders, introduce the lowly people to the senior people, and introduce the men to them.

When introducing a person, you should use honorific phrases such as "Miss Wang, allow me to introduce to you..."

Or, more casually, you can say, "Mr. Zhang, let me introduce this."

When introducing others, you should extend your palm (palm up) to the party you are introducing, not to point or take the shoulder or back of the introduced party.

After receiving a guest and introducing the guest to his host, he usually introduces the late guests to the early guests.

If a lot of guests, then only to introduce to the nearby guests to meet.