Dazhen Pass.
This place guards the critical route through Long Mountain, and it is the most crucial barrier in the western part of Guanzhong.
Currently, it is guarded by Guo Ziyi.
This arrangement was, of course, made by Gu Yi.
There is no need to say more about Guo Ziyi's abilities; in the original history, he was even hailed by many as a "savior of the Great Tang."
He is the only one who can withstand the ferocious attack of the Tubo at this time.
"First resolve the biggest internal threat, then tackle the external problems," this was the strategy that Gu Yi had long established.
In dealing with the Anshi Rebellion, Gu Yi's core idea was that internal strife and external threats must never erupt simultaneously across Kyushu as they did in the original history.
Although this arrangement would still cause considerable casualties, it was already commendable compared to the original historical trajectory.
