桓 (huán): Variety of tree — Stroke Order & Writing Guide

His surname is Huan, which is very rare.

In history, there was a famous Duke Huan of Qi.

Mr. Huan is a history teacher.

Huan Wen was an important figure during the Eastern Jin period.

Huan Tan was a famous philosopher and political commentator of the Eastern Han Dynasty.

Duke Huan of Qi was a famous ruler during the Spring and Autumn period.