Kaifeng, the regime that established its capital or moved its capital here: Xia (after Emperor Gao), warlord Qi, Warring States Wei (after 364 BC), Hou Jin, Liao (three months after Emperor Taizong of Liao Dynasty), Hou Han, Hou Zhou, Northern Song Dynasty, Zhang Chu (one month later), Liu Qi and Jin (after Wang Hailing and Xuanzong moved south). Thirteen regimes.
Capital regime: Ming. A regime.
Total: fourteen regimes.