Later that year, Fu Jian readied for a campaign west, but did not want to let the general Du Hong (杜洪), who occupied Guanzhong's main city Chang'an, know his intention, so he pretended to be ready to permanently settle at Fangtou. Once Du became relaxed, Fu marched west, dividing his army into two groups, one commanded by his brother Fu Xiong (苻雄) and himself, and one commanded by his nephew Fu Qing (苻菁) and Yu Zun (魚遵). Both armies advanced west quickly, and in winter 350, Chang'an fell to Fu Jian's forces.