By the end of the 1840s, Namgyal had united through military force the three chiefdoms of the Nyarong Valley, marking a break from its historical disunity. An earlier Qing campaign into Nyarong was also defeated. Namgyal followed these victories with attacks on the
Hor States, on the kingdoms of
Derge, and
Litang, as well as, in the words of Tibetan historian Yudru Tsomu, "harassing and plundering the domains of the
Kingdom of Chakla". To avoid Namgyal's campaigns, due to his reputation for being merciless, states such as
Golog,
Nangchen,
Serta, and
Jyekundo decided to submit to his rule. By the early 1860s, he began impeding trade linking China to Kham and Kham to Central Tibet. The
Ganden Phodrang's Tibetan forces then promptly reacted. Namgyal's reported threat to enter Lhasa's
Jokhang accompanied by his forces where he would steal two of the holiest statues of Tibetan Buddhism and install them at Nyarong, thereby forcing pilgrims to travel there, could have also motivated the Tibetan forces. By 1864, he controlled almost all of Kham. ==Defeat and capture==