C172 Goodbye to Old Friends

In the spring of that year, the Tang Dynasty mobilized more than a hundred thousand troops from Longdou, Hexi, Anxi, and Western Regions, and borrowed four thousand more from Huihe. The Su Dynasty took Li Yu as its general commander and Guo Ziyi as its deputy general, leading troops to Chang'an.

After Ma Po, Guo Ziyi accepted Wu Shiyan's final order to protect the crown prince as he fled