He is participating in international negotiations as a member of the School of Diplomacy.

This vast land spreads out endlessly in length and breadth.

He is a member of our team.

He is an international businessman.

This character is the old form of '横'.

縱 is a kanji that is not often seen in names.

We started negotiations for the new contract.

We negotiated about the new contract.

I plan to participate in the meeting.

I will participate in the meeting tomorrow.