In 333, in the aftermaths of Shi Le's death and the coup by his nephew Shi Hu, a number of Later Zhao generals rebelled and tried to seek Jin and Former Liang assistance. Former Liang tried to ally itself with one of these generals, the Di chief Pu Hong (蒲洪). However, in light of Shi Hu's victory over most of the other generals, Pu soon submitted to Shi Hu. Shi Hu, however, did not appear to consider attacking Former Liang, and, not having to fight Later Zhao for years, by 335 Zhang Jun's domain was described as being so rich and strong and under his capable leadership that it also became overlord over a number of Xiyu (西域, collective name for modern Xinjiang and former Soviet central Asia) kingdoms, which offered tribute to Zhang Jun. He submitted a plan to Emperor Cheng of Jin requesting to attack Later Zhao and/or Cheng Han jointly with Jin forces, but the plan was not acted upon by Emperor Cheng.