Zhenzhou (910) — the same event in Old History of the Five Dynasties and New History of the Five Dynasties

Old History of the Five Dynasties: Wang Rong of Zhenzhou and Wang Chuzhi of Dingzhou rebelled and allied with the men of Jin, so a general was sent…

What each source says

Old History of the Five Dynasties (Jiu Wudai shi), Annals · AD 910 · 鎮州

Wang Rong of Zhenzhou and Wang Chuzhi of Dingzhou rebelled and allied with the men of Jin, so a general was sent to subdue them.

時鎮州王镕、定州王處直叛,結連晉人,故遣將討之。
Location: 舊五代史 卷6

New History of the Five Dynasties (Xin Wudai shi), Annals · AD 910 · 鎮州

Wang Jingren was appointed Northern Field Pacification Commissioner to attack Zhao, but Wang Rong and Wang Chuzhi went over to Jin, and Jin came to Zhao's rescue.

冬十一月己丑,寧國軍節度使王景仁為北面行營招討使以伐趙。
Location: 新五代史 卷02 開平4年11月

Place: 真定 · 鎮州

Show on the map — open Old History of the Five Dynasties (Jiu Wudai shi), Annals