In Jehol-Chahar Sun Dianying's army was joined by Duanmu Hongliang.

Entity and relation annotations:
id: 0
type: entity
value: text: Jehol-Chahar
labels: <Location>
id: 1
type: entity
value: text: Sun Dianying
labels: <Person>
id: 2
type: entity
value: text: Duanmu Hongliang
labels: <Person>
type: relation
to_id: 0
labels: Person:visits:Location
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type: relation
to_id: 0
labels: Person:visits:Location
from_id: 2