Guazhou (727) — the same event in Old Book of Tang, New Book of Tang and Zizhi Tongjian

Old Book of Tang: The Tibetans attacked Guazhou, captured the prefect Tian Yuanxian and Wang Junzhuo's father, and took all the army's grain.; New…

What each source says

Old Book of Tang (Jiu Tangshu), Annals · AD 727 · 瓜州

The Tibetans attacked Guazhou, captured the prefect Tian Yuanxian and Wang Junzhuo's father, and took all the army's grain.

九月丙子,吐蕃寇瓜州,執刺史田元獻及王君㚟父壽,殺掠人吏,盡取軍資倉糧而去。
Location: 舊唐書 卷8 開元15年 9月

New Book of Tang (Xin Tangshu), Annals · AD 727 · 瓜州

The Tibetans invaded Guazhou and captured its prefect Tian Yuanxian.

吐蕃寇瓜州,執刺史田元獻
Location: 新唐書 卷005 睿宗·玄宗 開元15年9月

Zizhi Tongjian (Comprehensive Mirror) · AD 727

In September 727 (Bingzi day), Tubo generals Xinuoluo Gonglu and Zhulong Mangbuzhi take Guazhou, capture its governor Tian Yuanxian and others, and attack Yumen commandery.

九月,丙子,吐蕃大將悉諾邏恭祿及燭龍莽布支攻陷瓜州,執刺史田元獻及河西節度使王君𡙟之父,進攻玉門軍;縱所虜僧伽歸涼州,謂君𡙟曰:「將軍常以忠通許國,何不一戰!」君𡙟登城西望而泣,竟不敢不兵。
Location: 권213 727년 항

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