He was the nephew of Huan Wen and Huan Chong.

Entity and relation annotations:
id: 0
type: entity
value: text: Huan Wen
labels: <Person>
id: 1
type: entity
value: text: Huan Chong
labels: <Person>
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0